Osprey Atmos 65

Priced: $238.50 - $250.00 Rated:   - 4 stars out of 5 by 98 reviews.
Osprey Atmos 65 -
The perfect all around backpack, the Osprey Atmos 65 is good for light backpacking to week-long adventures. Durability through the roof with RipStop Cordura, a amazing LightWire Alloy Frame means you have a pack that moves and flexes with you. Best part about this pack? Osprey's AirSpeed suspension and a mesh backpanel to prevent any hot spots or sweat, meaning this is perfect for any season. Compression straps mean perfect distribution of weight empty or stuffed to the limit. Made for the trail but can breeze through a airport without a problem, the Atmos 65 is made for any occasion.

Support and Cushioning:

  • Shoulder harness adjusts over a 3 in. range for fine-tuned fit; new pad design with spacer-mesh contact surfaces and ventilated foam provides breathable, supportive cushioning


  • Airspeed Suspension with LightWire Alloy frame


  • Gender-specific harnesses available in three sizes


  • Atmos/Aura 65 packs include a zippered sleeping bag compartment with removable divider.
  • Dual vertical zip front pockets allow for easy gear organization
  • Zippered hip-belt pocket keeps your digital camera and energy gel packs close at hand


  • Side stretch mesh pockets with InsideOut compression
  • Stretch front and side pockets give you extra storage and organization options
  • The floating top pocket with under lid mesh pocket can be easily removed
  • Floating top lid features a large pocket and an under-the-lid mesh pocket


  • Zippered fabric hipbelt pockets provide secure, accessible storage
  • Front stretch woven pocket, side stretch-mesh pockets, zippered hipbelt pockets and 2 large front zippered pockets help organize gear for quick, convenient access
  • New lightweight and high strength fabric for excellent durability
  • The Osprey Atmos 65 pack is made with a lightweight yet strong 210- and 100-denier fabric set that offers excellent durability and less trail weight than heavier fabrics
  • Zippered fabric hipbelt pockets for storing a trail snack
  • Made with 210D high tenacity twill nylon, 100D high tenacity mini-ripstop nylon


  • Fine-tune your fit with different torso sizes to choose from and a hook-and-loop adjustable shoulder harness that moves over a 3-inch range
  • Three frame sizes each for Atmos and Aura provide precise fit
  • Updated AirSpeed™ suspension now offers fully adjustable torso length and adjustable hipbelt fit
  • Hipbelt uses dual-density foam for improved support and spacer mesh for breathability; exclusive adjustment system lets you customize the fit while wearing the pack


  • Removable sleeping pad straps add a level of performance versatility
  • Pack exterior features removable sleeping pad straps, Stow-on-the-Go™ quick stash trekking pole attachment system and dual ice axe loops with bungee tie-offs
  • Pads able to extend 3"/7.5 cm each side for 6"/15 cm total adjustment range


  • LightWire™ alloy frame creates low-profile air space, optimizing balance and ventilation; 3D tensioned mesh back panel ensures excellent breathability and supportive fit
  • Scalloped side openings for enhanced cross ventilation

Size and Dimensions:

  • Dimensions are 31 in length (height) x 17 in width x 16 in depth. (Medium)


  • Large main compartment contains a hydration sleeve and reservoir clip (reservoir sold separately); zippered sleeping bag compartment underneath features a removable divider
  • All Atmos/Aura series packs are hydration compatible with tube exit ports on both sides of the pack
  • Internal hydration sleeve with clip makes it easy to get your fluids on the trail (reservoir not included)


  • Slide-adjustable sternum strap helps take the load off your shoulders


  • Tool Attachment
  • Each Atmos/Aura Series pack features dual ice tool loops and bungee tool tieoffs
  • Stow-on-the-Go trekking pole attachment lets you quickly tuck your poles out of the way without stopping to unload
FEATURES of the Osprey Atmos 65 Pack.
SPECIFICATIONS of the Osprey Atmos 65 Pack.

You probably won't even know it's on your back when you take that hike with the Atmos 65 - 2012 by Osprey®.
Adjustable torso harness allows 3 in / 7.5 cm of adjustment for a fine tuned fit.
New pad design with spacer mesh and ventilated foam provide a breathable and supportive cushion.
AirSpeed™ suspension with LightWire™ frame and 3D tensioned breathable mesh backpanel provides optimized pack balance, ventilation and support.
Fit-On-The-Fly™ hipbelt design uses dual density foam for improved support and spacer mesh for breathability.
Adjustable system allows the belt to be custom fitted with a 6 in / 15 cm total adjustment range.
for added versatility.
with under lid mesh pocket can be easily removed.
Spacious main compartment for all your gear.
Dual ice tool loops and bungee tool tieoffs.
allow for easy gear organization.
Ajustable shoulder straps with sliding sternum strap for added load management.
Hipbelt features zip pockets for added storage on the go.
Mountain Gear

Lightweight versatility at it's finest. The Atmos 65 from Osprey is truly a do-everything pack. The suspension frame keeps air circulating through the back panel so you stay well ventilated. An incredibly adjustable hipbelt and shoulder harness provide a fine tuned fit for better comfort. A zippered sleeping bag compartment with a removable divider makes unpacking at camp a breeze. Multiple compression straps secure your load and reduce pack swing so you can be confident no matter where the trail leads.

Osprey's Atmos 65 Backpack has become the no-brainer pack of choice for warm-weather backpacking. The AirSpeed back panel is designed to circulate more air to keep you cool on exposed trails and warm, humid mountain treks; it features a LightWire alloy peripheral frame that creates a low-profile airspace while optimizing balance, as well as scalloped side openings that enhance cross-ventilation. Throw in a highly customizable fit, incredible light weight, and a host of pockets and features, and you get a pack that's ready for anything in any season.

Osprey's fully featured Atmos 65 Pack helps redefine expectations about weight, comfort and ventilation in backpacking. Fully adjustable torso length, an ultra-comfortable and adjustable and interchangable foam harness and hipbelt provides superb fit while the AirSpeed™ suspension provides great carry. Torso adjustable interchangeable shoulder harness allows 3"/7.5cm of adjustment for a fine tuned fit while using a new pad design, spacer mesh and ventilated foam for breathable, supportive cushioning. New lightweight, high strength fabric allows for excellent durability.


The Osprey Atmos 65 brings a ventilated mesh backpanel with side crescent to mulit-day backpacking. An ultra-comfortable waffle foam harness and hipbelt provides superb fit while Osprey's AirSpeed suspension provides great carry.

Appalachain Outdoors
The Atmos 65 Backpack Osprey is made with features for 2 or more days on the trail. The mesh backpanel is ideal for comfort and air circulation.
Eastern Mountain Sports (EMS)
The Osprey Atmos 65 L defines the lightweight hiking pack with a custom ventilated fit that lets you tick away the trail miles in comfort. Redesigned for 2012 with a radically updated AirSpeed suspension systems, new fabrics and a lighter trail weight.
Backcountry Edge

A long-time favorite among AT thru-hikers and fast-and-light backpackers, the Atmos 65 combines both durability and lightweight performance. A redesigned harness and adjustable hipbelt now provide even better comfort and fit.

Massey's Outfitters
The series that redefined expectations about weight, ventilation and comfort in backpacking just did it again. Our radically updated AirSpeed™ suspension now provides customized fit, with fully adjustable torso length, interchangeable harnesses and adjustable hipbelt fit. It all adds up to an even better fit and greater comfort on the trail Airspeed™ Suspension with LightWire™ frame and 3D tensioned breathable mesh backpanel optimizes pack balance, ventilation and support.
Men's Torso Adjustable Interchangeable shoulder harness allows fine-tuned fit.
Men's Adjustable hipbelt uses dual density foam for improved support and spacer mesh for breathability while offering an exclusive adjustment system allowing the belt to be custom fitted while wearing the pack.
Key Fabrics

The Osprey Atmos 65 pack redefines expectations for weight, ventilation and comfort. An updated suspension provides a customized fit for greater comfort than ever on the trail.



The series that redefined expectations about weight, ventilation, and comfort in backpacking, is about to do it again. The radically updated AirSpeed™ suspension of Osprey’s Atmos now provides customized fit, with fully adjustable torso length, interchangeable harnesses, and adjustable hipbelt fit. It all adds up to an even better fit and greater comfort on the trail.

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Average Price History: Price History
Review RatingNumber of Reviews
Access:Top Loading w/ Lower Sleeping Bag Compartment
Adjustable torso:Lightweight backpack
Backpack Features:Sleeping Bag Compartment, Top Loader
Backpack Style:Multi-Day Pack
Bottom Width:16 in
Capacity:S 3783 cu in. / 3 M 3967 cu in. / L 4150 cu in.
Depth:7 1⁄2 in
Detachable Daypack:No
Detachable Pack:no
Dimension:(H x W x D)
Dimensions:30 x 14 x 12 in.
Fits Torso:Medium: 18"-20.5" Large: >20"
Fits Waist:Medium: 30"-34" Large: >33"
Fits waist/hips:No
Frame material:62 liters
Frame type:Backpacking
Gear capacity (L):Internal
Gear capacity (cu. in.):Internal
Handle Drop:2 1⁄2 in
Handle Length:8 in
Height:31 in
Helmet Carrier:no
Hip Belt:Yes
Hydration Bladder Included:Not Included
Hydration Compatible:yes
Ice Axe Loops:yes
Item Weight:Medium: 3 lb 9 oz Large: 3 lb 12 oz
Laptop Sleeve:None
Material:210 D high tenacity twill nylon / 100 D high tenacity mini ripstop nylon
Maximum Weight:50 lbs
Middle Width:12 1⁄2 in
Number of Pockets:4
Number of exterior pockets:4,150 cubic inches
Number of stays:65 liters
Optimal Load Range:30-50 lb
Organization Pocket:no
Pack Capacity:62 L
Pack Fabric (Primary):210D HT nylon twill
Pack Size:4000-4999 cu in
Pack access:3,967 cubic inches
Pack loading:3,783 cubic inches
Primary Access:Top Access
Raincover included:3 lbs. 9 oz.
Recommended Use:Multi-Day and Extended Lightweight Backpacking
Separate Sleeping Bag Compartment:Removable straps
Shovel Pocket:yes
Size:M 31" x 17" x 16"
Ski / Snowboard Carrier:no
Sleeping bag compartment:3 lbs. 6 oz.
Sternum Strap:Yes; Adjustable Position
Strap Drop:14 in
Strap Length:36 in
Suspended mesh back panel:68 liters
Suspension:LightWire Alloy frame
Top Width:11 in
Torso Adjustment:Yes
Torso Length:S <18.5 in.M 18-20.5 in.L >20 in.
Trekking Pole Loops:yes
Trip Length:Extended Trip (>3 nights)
Type:Internal Frame Backpack
Volume:S 3783 cu. in.M 3967 cu. in.L 4150 cu. in.
Volume Range:60-69 liters
Weight:S 3 lb. 6 oz.M 3 lb. 9 oz.L 3 lb. 12 oz.
Weight - metric:Lightweight backpack
Weight Capacity:30-50 lb.
•LG:3 lbs 10 oz / 1.64 kg.
•MD:3 lbs 9 oz / 1.59 kg.
•SM:3 lbs 6 oz / 1.53 kg.
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Osprey Atmos 65 Reviews:

Positive Reviews:

Great fit, minor convinience issues

I have been searching for a replacement for my Kelty Trekker pack for a while. On Friday, after a long story which I will tell in a different thread, I ended up buying the Osprey Atmos 65. I immediately took it out this weekend for an overnight trip in the Sierras.

First, the fit is fantastic. The Osprey Exos 58 was the other option I was seriously looking at. But while the large size left the shoulder straps too high behind my shoulders, the medium size pack had the ends of the shoulder straps in my armpits. That's a trade off you often have with ultralight packs. You lose the weight, but you often also loose the ability to adjust it. In this case the large was too large and the medium was too short for me.

The Atmos 65 has a fully adjustable backplate which can be fitted to you perfectly. However, you gain 1 pound over the Exos. To me, this is the difference between "Light" and "Stupid Light". "Stupid Light" is when you lighten your weight but lose either comfort or safety. If my pack doesn't fit then I'm miserable. It's worth carrying one extra pound to be vastly more comfortable.

The Atmos 65 has a vented back which feels incredible. The waist belt fits at exactly the right spot on your hips and it stays there. The middle of the waist belt should be at the top of your hip bone with half the belt above and half below that hip bone ridge. The Osprey belt sits right where it should and it stays there.

There's tons of room in the Atmos, but my synthetic fill 15 degree bag doesn't compress very well so it takes up a lot of the pack. A down bag would work way better with this pack. There is a zipper at the bottom of the pack so you can stuff or remove your bag without unloading the whole pack. There's also a removable panel which separates the bag from the rest of the pack's contents.

The lid pocket is really useful and there are two long pockets on the back of the pack as well. The outer back pocket is a great place for my rain fly and rain gear although the stretch fabric is pretty darn tight.

My biggest complaint is the side pockets. The Atmos 65 is designed to be used with a hydration system. If you put 1 liter bottles in the side pockets then it's impossible to remove those bottles while wearing the pack. Those side pockets are also so tight to the pack that even when the pack is off it's tough to get the water bottle in or out of the pocket. If the bottle is empty then the pocket tension will just crush it. My only other complaint is that the belt pockets are much smaller than I would like. I could just barely fit my camera into one of them. They feel big when the pack is off. But once you put it on the tension of the belt and the placement of the shoulder straps gives you very tight access to those pockets.

But the fit! Oh My Gosh. I hiked 10 miles with 24 pounds yesterday and it felt great. I wasn't fighting the pack at all. Once I set the strap tension and sternum strap I didn't have to touch anything. I just walked and the pack became part of me.

I really wanted to limit my pack weight to 3 pounds or less. And within that weight limit I wanted a pack big enough to hold a bear canister. I went over my weight limit by 7 ounces but I think it's worth it. I now have a pack which can cover my overnight trips and probably a thru hike as well and is incredibly comfortable. Other than the side pocket/water bottle issue I'm really happy with it.
Sierra Greg at REI on 10/10/2012

Best pack I've used.

I love this pack. It's pretty light, the right compromise for me between ultralight and full featured.

I've had the Atmos 65 for about two years. My prior packs were REI Mars, REI Morning Star, Kelty D4 (1971!).

I've used the Atmos 65 on trips from 50 mile 7 day trip in the Sierras, pack weight about 40 lbs (first night no water source, so carried 4 1/2 liters) to a two night Yosemite High Sierra Camp trip, about 18 lbs with one liter water and a bottle of bourbon (thank you gift for the camp staff, of course).

What I like:
This pack fits me extremely well. I measure out to a medium pack size by torso length (5'10", 165 lbs). However after a couple hours tromping around my local REI store with 35 lbs in the pack, I found the large fit me better.

This is a fabulous pack for reasonable (<37 lb) weights. Beyond that the shoulder straps feel a little stretchy and elastic, and the loaded pack shifts a tiny bit with movement. No big deal for well graded trails, but I was aware of this on talus slopes, descending big rock steps, or on rock stream crossings. The same slight elasticity makes this pack carry very comfortably, unlike the rigidity of my prior packs which makes you want to take the pack off for 3 minute breaks. For me the Atmos 65 is like the dialed in ski boot you don't unbuckle at lunch.

The mesh sheet and curved back provide far better ventilation than any of my prior packs. No more salt encrusted stiff shirt backs!

That also means the space in the pack won't fit my BV 450 canister in the middle. It will fit above that, and it's better to have that weight higher in the pack anyway. To quote a software company, "that's not a bug, it's a feature!"

I have used a 3 L hydration bladder both inside the bag and outside between the mesh and the bag (which frees up more space in the bag).

What I don't like:
The hip belt pockets are much smaller on the trail after they belt is fastened, than they are in the store when the belt is floppy. Won't fit my P&S camera or phone, will fit gum, chapstick, small sunblock and DEET.

The bottom fabric covered corners of the frame show wear from setting the pack down on rocks. I figure duct tape, or a trip back to Osprey can take care of that later.

The water bottle pockets are difficult to use if the pack main bag is full. I often use a 1/2 or 1 liter bottle so I have some idea how much I'm drinking, and to mix in powdered drinks. Can get them out, but have to fiddle to get them back in.

If I lost this pack, I'd get another in an instant, but I might look at the Exos 58 first.
grayhair at REI on 07/07/2012

Great Pack

I bought this pack about a year ago and am so happy that I bought it. The original purpose of purchasing this pack was to use it for traveling Africa for 2 months. I was immediately impressed by it because I packed everything I needed and I still had extra room. **tip: During packing, roll up your clothes instead of folding the clothes. Allows you to pack more things** I had so much stuff that I didn't think I would be able to fit everything into it(enough clothes for a week-- 2 pairs of jeans, 2 pairs of shorts, 4 t-shirts/boxers/socks/etc, gloves, hat , 2 pairs of shoes, an ENO with straps, camera, computer, books, winter coat, rain jacket,etc-- I left USA having plenty of room left in the pack, and being able to put the pack into the overhead bin on a domestic and international flight because I was able to compress the pack down really tight due to the straps on it. No need to check any bags. I was so impressed.

It held up perfectly during travel. Felt good on my back even with all the weight in it (packed was ~25lbs). Definitely would recommend always using the sternum-strap and sometimes the waist strap. The pack can be uncomfortable if you don't use those 2 if you're hiking or walking a great distance without them. Guess that's what they're there for! To be used!

I've used it on several camping trips and backpacking trips so far. Never had any problems with the pack, and have always packed everything I need into it with ease, and have always had extra room which is amazing.

Someone commented that the pack was extremely uncomfortable because of the internal frame and had a bruise above his butt. I've never had a problem with that when I pack the heaviest things in the middle of the pack. Placing the heavier things in the middle and not on the bottom helps keep the back above my hips, keeps the pack from shifting down while walking, and removes strain on my lower back.

Overall, best pack I've owned. So glad I got it. And with REI's awesome 100% satisfaction guarantee policy, I'll always have "insurance" on this pack.

The only thing that I don't like is that it didn't come with a rain cover. But that has nothing to do with the pack. Cover can be bought online and is small enough where you fit it in the front pocket of the pack and you forget it's even there because it's so small. I got a medium cover for it. Fits fine for me because I don't attach many things to the outside of my pack because I don't need to with all the room it is.
Daw at REI on 03/03/2012

Lots of bang for the buck

I needed a pack for a 10 day trip to Washington's Olympic coast. I wanted something larger, light weight, comfortable, and with a floating lid to hold a bear canister. The Atmos was great.

I was a little apprehensive about the material the pack was made of, it doesn't feel thick or durable but that is by design since this is supposed to be a lighter weight pack. Surprisingly the pack held up well to abrasion from rock scrambles, scrub brush, a couple of slides down some not so steep headlands; however I still try to be more careful with this pack than some of my other packs that I'd gladly drag behind a moving vehichle or trust to airline backage handlers.

I have routintely over packed this bag ever so slightly and the seems buldge to reveal the stitchinig but over a year later the pack is still intact. While it hasn't been an issue it does give me pause for concern. Again, I just take care not to abuse this pack like I would some of my other bags.

When loaded down the hip cut into to my hips after a few days. Over time I guess I've gotten used to it or maybe I just don't cinch it down as much but it would be nice if it was a little wider. If you're going to be carrying a lot of weight perhaps think about getting the custom moldable hipbelt with a little more padding. The pockets on the hip belt are handy for snacks and and small cameras. The side pockets are generous enough to securely hold 1 quart nalgenes; a lot packs have side pockets that are just too short to hold nalgenes.

I've never used the treking pole holders or ice axe loops on any Osprey bag but I guess it's a nice option if you need it.

The two zippered pockets on the front left and right of the bag are great for separating dirty gear or things you need quick access to. It would be nice if one of these pockets offered a pass through to the main compartment.

Finally I love stretchy mesh outer pocket on the front of the pack, it's just a good catch all for outerlayers, water bottle, hats, raingear, or whatever. The clip on the pocket makes it convenient to cinch clothing across the pocket.

The one thinig I wish this pack had is an integrated rain cover like so many other Osprey packs, but once again this is supposed to be a lighter weight pack.

All in all this is a great pack and most the small issues I've had with it are answered in the Osprey Aether model
ok2drive at REI on 06/06/2013

Magic Weight Eraser

My Arc'teryx Bora 95 is for long excursions and stays, like Burning Man events and such. Nothing tops it for that so I am used to being spoiled with the best. Well, until the Atmos 65. Its weight by itself is a feather. It has so many ways and places to put gear, you can almost forget what all you're carrying.

For long tedious climb hikes in the White Mtns, amazing. It keeps me nimble, conforms to my profile so I don't snag on narrow/low passes. I'm 6', ~170lbs, and it fits excellent, with (as noted above) straps to spare. It sits well on my hips, I only feel weight there and a bit on shoulders. The pack seems to "want" my posture to be upright and healthy. I fit my Marmot Swallow tent, sleeping bag, stove, pans, fuel, 3 days meals for 2 people, Camelbak, clothes, tent footprint/liner, etc. in there well. It was snug, but adequate and I could have added a bit more.

Lots of outside loops and resources for carrying add-ons like extra shoes, poles, pad, etc. make its baseline capacity very expandable. An inner pouch have no bottom to it (so why, then is there a zipper at the top of one of the inside ones, I wonder?), and the "hydration" set up is so incredibly stupid as to not be worthy of what is otherwise a totally awesome pack. Forget their "hydration" pouch and just stuff the CamelBak in the outside ... all will be well.

A note on the waist straps ... WOW - 2'+ extra leftover on EACH side. Really? Did I miss something on how to use them? Anyway, bless you if you are big enough to need all that strappage and STILL be able to hike.

You do feel like a weightless astronaut with it ... like you're going to float down the trail. I couldn't shut up and my companion kept teasing me about my endless exclamations of delight with the weight mgmt. Again, a Marmot Swallow is 8lbs+, and I didn't even feel it. After main bulk was offloaded (meals, whiskey, extra water) the weight was embarrassingly low.

I read reviews of both the Arc'teryx Bora and the Osprey AFTER I bought the Osprey. I have been spoiled in my choice of both. There are reviews elsewhere (Trailspace) on Osprey that they lead the way, set the standards for other packs, is well noted. I looked at a Gregory as well as some EMS ones ... the Osprey was awesome by comparison even in the store. I cautiously kept sales receipts and such for until I loaded and tested it ... this one WON'T be returned.
PranaMedic at REI on 09/09/2012

Great Pack

I purchased this pack for my first "real" backpacking trip. I'm an avid camper/hiker but it's been few years since I did a backpacking trip and then, most of our gear was brought in by truck. This time, I was going to carry everything I needed for a two night stay in the Sipsey.

I can't compare this except to a pack I had years ago which had an aluminum frame lol, so I'll just comment on what advantages I found this pack to offer from my viewpoint. I'm 5'9, 170, male. I was carrying about 27 pounds.

The sleeping bag compartment is a nice feature but it really doesn't matter in my opinion. When I'm ready to pitch a tent, I usually have most everything pulled out of my pack anyway, so having a separate sleeping bag compartment is not a necessity.

The pack has plenty of pockets spread all over. There are two on the sides of the front facing compartment, which I didn't find a use for - yet.

The top has a mesh pocket on the bottom of the flap and it has one on the back side of the flap. I really found that one handy. It has an internal flap which keeps things from falling out when the pocket is unzipped. It's actually accessible when the pack is on me.

The side pockets are deep and have expandable material but my medium size water (~3" bottle was a tight fit and difficult, but not impossible, to remove with the pack on me.

It was difficult to insert a filled Osprey 3L hydration bladder with the pack full but I decided not to use the bladder anyway since I had my water bottle and a water filter. If I ever use a bladder, I would go with a smaller 2L size. Also, I noticed there was a frame support rod across the back where the bladder sits. Would seem that this would place tremendous pressure on a bladder which didn't have a hard plastic support back like the Osprey bladder has.

The waste belt also has two zippered pockets which are quite handy for items needed along the trail.

I was pleased with the pack on an 8 mile hike. No wobbling or pressure points and the fit was comfortable.
Backcountrygwt at REI on 05/05/2013

Even better than the original Atmos!

I've owned the original Atmos 50 for several years, and was surprised to hear that Osprey was revising both the Atmos 50 and Atmos 65. What could they possibly improve? With a weeklong backpacking trip on the horizon, and the heinous prospect of carrying dog food along with 7 days of my own grub, I decided to take the plunge on the "new and improved" Atmos 65.

Let me be the first to admit that my suspicions were unfounded. How did Osprey manage this? The updated pack is significantly lighter -- the 2012 Atmos 65 only weighs a couple of ounces more than last year's Atmos 50! -- but the fabrics used feel just as tough as the previous model, and none of the features have been compromised in the name of going ultralight. They've also improved the padding on the waist belt and shoulder straps.

This is THE pack to have, and I can't recommend it more highly. If I could choose six stars, I would. The suspension is efficient and transfers the load beautifully; unlike many lightweight backpacks, you can actually load this one up to the top without setting aside $ for future chiropractor visits.

I pack pretty light when I'm on the trail, but I started out with 38 pounds in this bad boy for the aforementioned trip, and it felt like 25... all from a backpacking pack that weighs 3.5 or 4 pounds, depending on the frame size.

What's not to like? The side pockets fit my water bottles easily, and my pocket camera fits in the hip pockets. The compression straps are well-placed and effective. The sleeping bag compartment is MAMMOTH; I easily carried a +15F bag, 1" Therm-A-Rest and silk liner in there at once, smooshed inside a lightweight dry bag.

Multiple outer pockets provide several options for storing potentially-wet items like crossing shoes, rain jacket, pack cover and water filter. The pack rides very comfortably, the load lifters are perfectly-placed and this thing just LOOKS cool (mine is "oxide red")...

If you were on the fence about Osprey's original, award-winning Atmos series packs, it's time to man up (or woman up, although you'll want an Aura 65) and pick one of these up. Seriously. This is THE best backpacking pack on the market right now.
Jeff at Rock/Creek Outfitters on 06/06/2012

Great performing pack

I will admit, my experience with backpacks is somewhat limited. It's only been in the last few years that I have made the leap from camping to backpacking. In those years, I have purchased three packs and I must say the Atmos is by far superior to anything I have used so far. Yes, this pack is meant to carry lighter loads and it does become uncomfortable if overloaded or improperly fitted. I have had this pack for over a year and it has been on three trips in Big Bend and Lincoln national forest. The Atmos carries my gear perfectly and I am able to remain nimble on my feet without sore spots on my shoulders or back. The mesh in the back is a godsend for desert trips and I use this pack exclusively with a bladder system. I have used the side pockets for carrying water but I use this as my "camp" water- cooking, special drinks and such. There was once that I did load it close to capacity in BiBe- had to carry around 20lbs of water. It was not painful, but I could tell that I was stressing the suspension, especially on the first day. Once some of the water was consumed, it went back to being the most well-behaved and best-feelin pack ever. On another note, I do believe that getting the right fit is paramount. I purchased the female counterpart for my wife and after a couple of trips, we realized that she indeed needs the small instead of the medium torso size. The above mentioned trip was *ahem* not a good trip for her... Overall, I have recommended this pack to my friends with no reservations except for those that enjoy winter trips and we don't exactly get winter conditions in the southwest. Osprey makes superior products and it's obvious all over this backpack.
a-cosmonaut at REI on 02/02/2013

Go-to bag for the Sierras

This pack comes with me each summer for multiple 3-5 day trips into the Sierras (trying to hike ~8-10 miles/day), and it is the first backpack I've been completely happy with. I am a not-quite minimalist hiker; bringing mostly the lightest gear possible (~20-25 lb packweight) and under those conditions this pack is perfect.

I purchased this bag after having very bad luck with a previous backpack that was lighter and lacked the support and padding that the Osprey does. The extra lb of support and breathability across the back is definitely worth it!

The bag is effectively a gigantic stuff sack with good back support / frame. Even the larger bear boxes can fit inside the pack--though be careful not to choke off your drinking tube! This is a huge advantage over other packs with various compartments that ultimately require dangling your tent, ground pad or whatever else from the outside of your pack. I've never actually used the bottom external straps because of the huge internal capacity of the bag.

For my uses, this bag is ideal but I could see how the 'single compartment' concept could pose problems for others. Thought needs to be put into the order in which you pack your bag (water first, tent last) and also how gear can be broken down to fit inside the bag--not hanging off of it. If that doesn't match your style of hiking/camping, a heavier or even external frame pack might work better for your uses.
moonscience at REI on 06/06/2012

Extremely happy with this pack

To put things in persepctive I am 5'9" 150lb. I bought a small gregory that was too small and a medium that was too large. I really liked the pack and rei outlet price but neither fit prooperly. and the didnt have a smedium. So the wonderful staff at REI recomended this pack since it is adjustable. and unfortunatly not on clearance.

I have used this several times mostly day hikes and one backpacking trip so far. Day hikes 25lb-30lbs backpacking trip 20lbs only half a liter of water.

I had no problems with the pack. It is extremely comfortable and I didnt have any preasure points. I did notice several small scratches on my shoulder blades not sure what caused them. The pack may need a little extra padding.

There are many pockets for organization and accessability to import gear. I did realize the water bottle pockets are difficult to access while wearing the pack and nearly impossible to put the bottle back without taking it off or having a companion put it back for you. I would have liked the water bottle pockets to be on top of the pack like external frams. I also feel like the straps are too long and you could save ounces by cuting straps and removing unneccasary attachments(Which I have NOT done yet).

I am glad I bought this pack and not any other.
AnthonyStray at REI on 01/01/2014

Negative Reviews:

I have to agree with the review preceding mine, this pack did not live up to the hype and I really wanted it too. First of all I hate the newer suspension systems backpack manufacturers are making. I have tried them out on a few models and just can't get over my distaste for them. First the suspension systems dig into packing space and take away from total volume by creating an uneven storage compartment making it difficult to load. Then there is the issue that these suspensions displace the load away from the back making it harder to balance loads. Call me traditional, but I like to distribute the weight directly off of my hips allowing my shoulders to rest a bit (I took the suspension out the second go around on the trail). The shoulder straps never fit me right. I was concerned about this when pack fitting and finding the right size at the shop, but when I got it out onto the trail it just resignated the entire trip. The straps just dug into my shoulders and I could never maintain that balance so I felt as if I was readjusting ever half hour or so. Finally the chest strap broke on my 3rd adventure with this pack and I knew then I had had enough. The plastic buckles at times came loose and I was carrying around 25-35 lbs on 5 day backcountry adventures. What I did like about this pack is the flexible nature of the packs front pouch. The capacity without the suspension was much improved. I was just never really impressed with the load distribution and wanted more in regards to comfort. Bottom line, it just did not work for me, but anatomically it may work for someone of different dimensions. I am 5'10" about 165 and this pack fit me in the medium and I could almost make a large work, but stuck with the medium. Keep in mind height has nothing to do with fitting, torso lengths can vary considerably in people of the same height so it is personal discretion.

Johnathan Rambo at Backcountry.com on 08/18/2012

i wish i could say i had the same experience that the other reviewers had with this pack, but it completely let me down . i had started the pct with a brand new one, loaded with 35-just under 40 lbs with water, and within a week, the zipper tore on the inside that keeps tension on the back panel, and the wire frame stay bent, which allowed the frame to shift and the load was never positioned correctly on my shoulders. i managed to fix the frame problem, but the corners were rubbing on my hips so badly (mind you i tried everything body glide, moleskin, duct tape, more clothes, less clothes etc) that i literally bled through my shirt, and have scars. on top of all that, the hip belt pockets i found basically useless, i'm not sure how it made it past R&D, but the corners of the frame as well as the shoulder straps overlap the rear part of the zippers, as well as the pockets, so using the whole pocket is basically impossible.
after all that there were some positive things about the pack, like the layout and the weight, but i think that it needed a lot more work before recommending it for a thru-hike.

Mike Antilla at Backcountry.com on 07/13/2012

Ouch - poor design

Not what I was expecting from Osprey. I purchased this pack to cut weight and have a pack that could carry about 30 lbs for 2-3 day trips. I took it on a trip and after about 1 mile I started feeling sharp pains that later turned to bruises at top of my butt. Problem: the metal frame (that is concealed behind the hip belt on Osprey's larger packs) extends just below the hip belt and rubs and puts pressure from the pack directly on you. The hip belt is sewn into the side of the pack, and the design of the belt and the frame do not work. I tried every type of adjustment, and finally concluded it is just a bad design and there was nothing I could do to fix. REI stood behind their 100% satisfaction guarantee, and I am once again shopping for a new lite to medium weight pack. I notice that other simlar size packs pull the framing in toward the middle of your back and bury it behind a pad at your lumbar.
Jon is gone at REI on 02/02/2012

Too short

I wanted to like this pack, and I tried both the medium and the large. But, with the goal being light weight, you certainly give up a lot of comfort. I spent several hours tinkering with the adjustment, and took this on 8+ hours of hiking with 35+ lbs, and I just don't find it comfortable at all...the big problem is that due to the size of the pack, the lifters don't really lift...they just pull back and just snug up the weight to your pack, but don't really get things off you shoulders. So, I am pack to my 20 year old reliable external frame pack...
Doug_G at REI on 08/08/2013


I had to return this pack. In the store it felt great. When I took it home and loaded it with my own gear my back was hurting after about 5 min walking around. I tried it again the next day with the same result. I felt like the metal frame around the mesh was digging into me. I ended up getting an Arcteryx pack instead.
El Lobo at REI on 06/06/2012

Dug into my hips

I don't think I overloaded it. I really tried to pair down and I still had a problem with the pack diging into my hips and back. I decided to return it after a 4 day backpacking trip.
FlyinRyan at REI on 06/06/2012

Neutral Reviews:

Lightweight load is a must.

Cons: to start I have to say that I agree with a few other posts; this backpack can't handle much over 35lbs. I try and keep mine around that weight, anything over will cause weird hot spots and insufficient ventilation on the backside. Mostly my lower back takes the brunt of it's poor "suspension" design. Notice I used suspension in quotes because this backpack doesn't really have a suspension system (Gregory packs have good suspension). Also, once the pack is maxed out it forces the backing of the pack to completely bulge outwards towards the mesh backing, ultimately depleting your ventilation. The same with the pockets, the new design makes them impossible to put anything of real importance in them; I can only fit small things like chap-stick. However my GPS, camera, things of that nature won't fit (depressing). In addition to tight fitting pockets we have the side pockets for water bottles etc, however it is such a tight squeeze that Its a constant battle to place my Nalgene (32oz - I use it for my steri-pen and to mix drinks, and use it as a personal heating device just by adding hot water and putting it in my sleeping bag on cold nights) in the pocket. I usually have to take off my backpack and tug on the stupid thing, then another struggle to place it back in.
Lastly, I'm not a fan of the new design; the shoulder straps can be altered vertically to help the fit of the pack but it is causing shoulder pain and it's really uncomfortable even on short trips. Maybe I haven't mastered the vertical positioning of the shoulder straps yet, but it seems to be the grey material protruding from the top of the shoulder straps that is causing the discomfort. I'm going to continue to adjust the straps until hopefully I find a remedy if not it's getting returned. I loved last years model, I wish they hadn't made the switch. Bring it back!

Pros: If your weight is under 35lbs this is an extremely comfortable pack. The ventilation works properly (hopefully you have better luck with the shoulder straps) and all of the functions seem to be use full. The "stow&go" works well, I love that I don't need anyone's help or have to dismount my pack to put my trekking poles away. It's really easy to use as well, just pull tight the cord with the pole handles above the cord and then place the tip of the poles through the clear elastic back protruding from the bottom-side of the pack. It's a perfect fit, I even use them as an elbow rest while I'm on the move. I use the 65 because of the sleeping bag compartment, however I don't store my sleeping bag in this are of the pack; if I am in bear country I put my bear canister instead. This keeps the majority of the weight on my hips. When not in bear country usually I will undo the inside straps of the sleeping bag compartment and use the whole bag as a stuff sack. This original model of this backpack was a perfect mold, it fit my back so perfectly that it was actually comfortable to wear. My confidence isn't as high with this new design, however their is still a lot of comfort that is loved, the mesh back design cradles your back and feels like a spring board. I've used many other pack designs and this one felt the best to me. I've used this pack on many big hikes; Grand Canyon, High Sierra's, Zion, San Jacinto, San Gorgonio and other gorgeous terrain.

Overall, I rated this product lower than it should be because this pack is not for everyone. If you spend the money and get the ultralight gear this product will love you back. I'm going to stick with Osprey. I own other backpacks; REI, Gregory and NorthFace and I always reach for my Osprey. Happy hiking.
crockett at REI on 05/05/2012

Problems more annoying than I thought

Now that I've spent several days over two different trips with the Atmos I find that I still love the fit, but the problem with water bottles is almost fatal. There is absolutly no way to get a water bottle into or out of the side pockets while hiking. You are pretty much forced to use a hydration unit.

The side and back pockets are really tight to the point of being less useful because you're so limited as to what can fit into them. I tried to put my rain parka, tarp, and 8 ounce fuel bottle into the back pocket and that was already feeling like I was stretching the material too far. If I put a full water bottle in the side pocket I have to force it in. If the water bottle is empty the pockets are so tight that they will crush a standard Aquafina bottle.

I emailed Osprey's customer support and they confirmed that the side pockets are designed for items like tent poles or snow wands, not bottles. That limits the usefulness of the side pockets for 95% of Osprey's users. It's a bit frustrating to hear from Osprey themselves that the pack is not just designed to use a hydration system, but is specifically designed NOT to use water bottles. They shouldn't be limiting the customer's options like that. Osprey does sell an add on water bottle holder, but why should I have to spend more money and carry more wieght for an accesory that does what the pack should have done already?

The next issue is the belt pockets. I can fit a small camera in the belt pocket if the pack is off. But with the pack on it's really a tight fit because the curvature of the belt tightens the pockets too much. I can just barely fit a small Cannon powershot camera into the pocket. There are add on pockets from other suppliers which can attach to the shoulder straps to carry a cammera. But once again, why should I have to buy an additional item to do what the pack should have done in the first place?

The fit of the Osprey Atmos is so fantastic that it really hurts to be serious considering returning this pack to REI. I don't want to give up that amazing fit.

What Osprey needs to do is to keep the Atmos suspension, bag and removable top bag, but replace the side pockets with mesh pockets cut lower towards the user with a shock cord top so those pockets become usefull. Then replace the back pocket with mesh with a shock cord compression to add usefullness to the back pocket. Remove the "on the go" treking pole holders which are just a gimmick. If I want to put my poles aside that's worth taking off the pack since I don't do that multiple times every day. Remove the lower zipper for sleeping bag access and the bag's inner shelf to save weight. Expand the belt pockets to be at least 3 to 4 times larger. Do that and you would have an amazing thru hiker/multi-day pack which fits like a dream.

At this point however, I'm almost ready to return the pack. If only it didn't fit so darn well.
Sierra Greg at REI on 10/10/2012

Too heavy for long multi-week treks

Prior to trip, I tried several backpacks at REI. Atmos 65 had best feel so I tested it in store with 30 lb. load (my max limit for my backpacking trip around the world)--it felt totally great. Well-balanced. LOVE the SHORT HIP FRAME that prevents annoying "butt sag."

Used A65 for climbing mountains in the Philippines (summitted highest mountain in Luzon (~10,000 ft)), trails & temples in Cambodia & China and then back-to-back treks on Camino de Santiago (5 weeks) & Portugal (2 weeks). It felt painfully heavy on the Camino, which confused me because it has the same specs as Deuter 65 which I carried on my previous Camino Frances but I could carry more weight (22 lbs dry weight on post office scale). Deuter did not hurt my shoulders--but it had "butt sag." Lightened my A65 load to 16 lbs (dry @post office scale) and the feel became comfortable. But A65 is good only for 10 miles and then the shoulder straps really dig in and became painful. No amount of adjusting would work. This forced me to rest more or stop hiking any further. Not good since I hike 15-20 miles every day! The air vents were not for me: vents are great for hot weather but major back chills on cold, wet mountains. The hip/frame system, however, was still great (thumbs up!).

In sum, I really want to love this backpack...but I just cannot. Many Americans & Canadians carry this pack on the Camino and the majority of people said their packs felt too heavy and pack itself was just "okay." No one raved about their A65. I wanted to return mine to REI but kept it because… heck, I carried this pack around the world! I have since bought a 2 lb. REI Flash (50 liters) backpack and will be taking it next year on my next long-distance adventure trek to Africa.
JAD Hiker Photographer at REI on 11/11/2013

I LOVE Osprey...........but

I LOVE Osprey products, I really do. I have the Osprey Poco Premium child carrier and I can hike 6-7 miles with my 1 year old plus some gear stowed in the pack and I barely feel any additional weight. The Poco does a tremendous job at spreading the weight and it has a great hipbelt system. I bought this because it was an Osprey pack, got pretty good reviews, and was exactly the size that I needed.
I used this pack about 6 times on hikes ranging from 4 to 9 miles. I really wanted to like this pack but I had to return it. Part of the problem isn't necessarily a problem with the pack but that I'm not a small guy. I'm 5'11" and 220 pounds. The bottom of the frame, which is supposed to wrap around your waist (which I'm sure it does on thinner men) just dug right into the corners of my back. I felt like the Atmos had half the features of the Aether but wasn't half the price. Like most other reviewers, I aslo struggled with the water bottle holders, the external pockets couldn't be filled AFTER the inside of the pack was filled, the hipbelt wasn't replaceable and the hydration pack sleave was half the height that it should of been. The Aether solves all of these problems and it's a much better fitting pack. Yes, it weighs a pound more for roughly the same internal volume, but at 40 years old, I'm all about comfort rather than weight savings.
Both the Atmos and Aether are very high quality packs and seem very durable. For a little bit more money, the Aether is such a better pack.
I would still recommend this pack as a great pack, but I wouldn't recommend it over the Aether.
scubadiverma at REI on 03/03/2013


Eh, I dunno. Osprey makes some good stuff, but it seems like particular pack was designed to fill checkboxes in the marketing material and look clever on the shelf.

I mean, take the fully suspended mesh back: it seems like a good idea on paper - that's why I bought it - but it starts bottoming out after I've got 30lb in there and the ventilation doesn't do a whole lot if I'm wearing more than a t-shirt.

The mesh pockets on the front of the hip belt seem like a good idea, but the way the belt curves they get compressed and can't fit anything useful - some daisy chain would've worked better.

The vertical side pockets: they're internal to the main cargo hold and so again get compressed and aren't usable once the pack's loaded. I took a knife to mine so it opens directly into the main compartment.

Water bottle pockets on the sides: the compression straps run right across 'em, but that's fine because you can't reach them anyway. However: "8 External Pockets"

It's got some sort of diagonal load bearing and compression straps on the sides - trouble is they don't run across the front but rather up the sides about 4 inches. If they had buckles one could use them to strap on sleeping pads, trekking poles and the like... but they don't.

Have yet to figure out how the "Stow-on-the-Go" trekking pole loops are supposed to work, but I guess they're harmless.

It's not a bad pack: it's light, rugged-ish, got a nice sleeve and clip for a hyration bladder, and there's no comparing with the old tubular-aluminum style packs, just now that I'm more experienced I wish I'd gone for one of Osprey's other offerings.
mosfet at REI on 04/04/2012

Good ideas but not practical

I use backpack for training trips atleats twice a week to train for a week long backpacking trek in California. I usually carry about 25lbs for training two and 1/2 hours in the evenings. The mesh back support does keep your back cool but the arch in the fram causes the load to pull away from your back causing more pulling on your shoulder sraps to try and keep the weight on your back. Don't get the 65 liter because if you are packing that much stuff it will be too heavy for the pack causing it to become uncomfy at a 25lbs limit. I love the large pockets on the hip belt and the pockets on the outside back part of the pack keeps me organized. It is also a very light weight and breathable pack.
I have seen other people with frameless packs that they can't say enough things about. And I tried one one with weight. The frmeless pack option is better because the pack conforms to your back puting more weight on your back and removing weight from your hips and shoulder. If you can keep your pack weight below 25lbs which you have to do for the pack to be comfy the frameless packs are a way betterr option. I did buy this pack for my self.

Bottom line I would not buy this pack again although the pockets and breatheablity is nice.
Tim the Backpacker at Eastern Mountain Sports (EMS) on 08/08/2012

Water Bottle Pockets

I have only used this pack a few times and it is one of the most comfortable packs I have owned. It does a great job of moving the load weight to your hips thus reducing stress on the shoulders and back. The back panel is extremely breatheable and it has no problem handling a few days worth of gear.

However, do not expect to get much of anything in the hipbelt pockets. Not only are they tiny (I can only fit my headlamp in one) but they are positioned to far back to make them useful. The hipbelt pocket I can overlook, the dealbreaker for me is the water bottle pockets. WHAT was Osprey thinking when they designed those things?? They are designed to make your water bottle face the back of the pack!! This makes it nearly impossible to reach your water bottle without taking your pack off everytime you want a drink. If you do manage to get your water bottle out there is no way to get it back in the pocket. If you use a hydration bladder this will not be an issue for you.

I bought this pack for my upcoming A.T. thru hike but unfortunatly will be returning it. I need access to my water without removing my pack.
JasonG at REI on 01/01/2013

Nice pack for under 30lbs

I bought the 2010 version of the Atmos looking to go more minimalist for a 5 day hike in the Grand Canyon. I liked that this pack was considerably lighter than my REI Mars 85. (I didn't need the 85 since I had upgraded all my other major gear.)
I was very impressed by this pack's efficient loading capacity. The small mesh pocket as well as the two large zipper pockets are extremely helpful features. Additionally, the Large Atmos fit in the overhead compartment when flying! I was able to fit quite a bit in this pack for 5 days without bursting at the seams. My major complaint about this pack is that it CANNOT take weight! Anything over 35lbs (maybe 32lbs) and you risk a very uncomfortable pack. (Granted, Osprey reps will admit to this as well.) I really wanted this pack to work, but in the end I had to return it. I think for a PURE minimalist or a two-three day trip this may work. the current Atmos has slightly more padding but the same frame so I doubt that this will help much. I'm looking at the Gregory Baltoro 65 to replace it.
Asch at REI on 03/03/2012

I thought I would love this backpack. It has a lot of cool features. I like the sleeping bag compartment, the 2 front/side pockets, sleeping pad straps, stretch front pocket, and the suspension. I like the front/side pockets because I could put my quickdraws, cams, etc in them.
However, it didn't carry comfortably for me. When I tried it out with 30 pounds (just walking around the house), it felt fine. However, I just got back from backpacking with this and it did a number on my hips and shoulders. I found that the metal frame rubbed against the back of my hips and that the hip belt was not well shaped for the front of my hips either. I am a pretty skinny guy... maybe that's why, but anyway, this pack just isn't for me. I'm sad to say that I'll be returning it.
I'll probably check out the aether 60. The hipbelt on that has gotten all sorts of praise. Plus, I hear it's super stable and carries very well.

Koman at Backcountry.com on 11/03/2013

Disclaimer: I own the 2010 version.
First of all, the good:
Love all of the thoughtful design features typical for an Osprey. Everything works as it should, and then some. Lots of storage, inside and out, and the mesh back panel works wonderfully for ventilation.
However, the bad part is probably the most important: comfort. The hip belt eventually digs into my hips after only 1 day of backpacking. Also, I have protruding SI joints, and the bottom of the back panel sits right on them. It is not a cushioned pad, but rather an extension of the mesh. After a day of hiking, my SI joints are rubbed raw.
It looks like Osprey has addressed these problems in their 2012 version, which is great! I'm sure the 2012 would be a 5 star pack for me.

Connor Bruson at Backcountry.com on 08/29/2012