Arc'teryx Men's Atom LT Jacket

Priced: $138.99 - $199.00 Rated:   - 5 stars out of 5 by 15 reviews.
Arc'teryx Atom LT Jacket
Zoom In
Color: Platinum
Available Colors: $138.99
30% off
Regularly: $199.00
Half-Moon Outfitters $139.99
29% off
Regularly: $199.00
Appalachain Outdoors $159.16
20% off
Regularly: $199.00
Paragon Sports $159.20
20% off
Regularly: $199.00
Oregon Mountain Community $172.74
13% off
Regularly: $199.00
PeterGlenn $198.93
Mountain Gear $198.95 $198.95
Berg's Ski Shop $198.95 $198.95
Moosejaw $198.95
Evo $199.00 $199.00 $199.00
Christy Sports $199.00
Ramsey Outdoor $199.00
Visit our Daily Deals for great products at low prices.
Arc'teryx Atom LT Jacket -

The Arcteryx Men's Atom LT Jacket. Ideal for ambitious days when the mercury plummets, this warm mid-layer features composite materials that balance warmth and breathability. The arms and torso are fortified with Coreloft insulation, and the side panels and underarms incorporate Polartec Power Stretch with Hard-face for superb mobility and breathability.

FEATURES of the Arcteryx Men's Atom LT Jacket.
SPECIFICATIONS of the Arcteryx Men's Atom LT Jacket.


  • Soft brushed-lined collar


  • Vislon front zip zip with insulated wind flap
  • Coreloft insulation is lightweight, compressible, and warm

Weather and Wind:

  • Wind resistant to keep out cold gusts
  • DWR-coated nylon shell is wind- and water-resistant


  • Two hand pockets and one internal pocket to hold gear
  • Waist drawcord warmer pockets

Lining and Layers:

  • Highly breathable for performance as a layer


  • Drop back hem hits lower for added protection
  • Composite materials
  • Polartec® Power Stretch® with Hardface® Technology; Luminara™—Nylon weave fabric with wind and water repellant coating; 60 gm/m² Coreloft™ insulation.
  • Trim fit Hip length with drop back hem
  • Moisture resistant outer face fabric with DWR finish
  • Laminated hem
  • DWR finish (Durable Water Repellent) helps bead water from fabric surface


  • Stretch knit cuffs fit close to keep out cold air
  • Articulated design for ergonomic fit
  • Low profile stretch side panel provides a trim fit


  • Breathable, stretch side panels for enhanced comfort and mobility


  • Cuff & Sleeves Configuration


  • Polartec Powerstretch panels under the arms for unlimited range of motion
  • Gusseted underarms Articulated elbows
  • Stretch side panels for freedom of movement
  • Compressible and pack able

The Arc'teryx Atom LT Jacket is ultra lightweight and very comfortable to wear. It's insulated and windproof, and provides a surprising amount of warmth when compared to its weight. The Atom LT Jacket fits close, yet relaxed, and can easily be layered under a ski shell or over everyday clothes. This jacket is normally worn as a midlayer, but for spring skiing in later April the Atom LT Jacket is more than up to the task. As always, you get top-notch materials and legendary quality that lasts a lifetime.

Berg's Ski Shop
Ideal for ambitious days when the mercury plummets, the men's Arc'teryx Atom LT Jacket is a warm mid-layer features composite materials that provide balanced warmth and breathability. The arms and torso of the Arc'teryx Atom LT Jacket are fortified with Coreloft™ insulation, and the side panels and underarms incorporate Polartec® Power Stretch® with Hardface® Technology to increase mobility and breathability. A wind and moisture resistant outer shell extends stand-alone usability of the men's Arc'teryx Atom LT Jacket.
When the thermometer is frozen over, you better reach for the Arc’teryx Atom LT Jacket. This coat loves to be deployed as a toasty mid layer as it beautifully balances breathability and warmth. Coreloft insulation does work to keep you toasty on those particularly chilly days when you want to rock this piece solo as well. Polartec Power Stretch material lets your body move naturally by never restricting movement, and the outer shell is great at deflecting moisture and wind. When you wake up to discover that the mercury has plummeted, equip yourself with the Arc’teryx Atom LT Jacket for the kind of protection that always equates to successful adventures.

Christy Sports

Arcteryx Atom LT Jacket - Men's:  The Atom LT is an insulated mid layer that will help you on those days where there's a significant temperature swing.  There's a balance between warmth and breathability that will have you loving this coat!

Technical Features.
Moisture-resistant outer face fabric.
Compressible and packable.
Wind resistant.
DWR finish (Durable Water Repellent) helps bead water from fabric surface.
Composite materials.
Breathable, stretch side panels for enhanced comfort and mobility.
Articulated elbows.
Gusseted underarms.
Collar Configuration.
Soft brushed-lined collar.
Zippers & Fly Configuration.
Full front zip with wind flap.
Cuff & Sleeves Configuration.
Stretch-knit cuffs.
Hem Configuration.
Drop back hem.
Laminated hem.
Pocket Configuration.
Internal chest pocket.
Two hand pockets.

When the sun dips down below the horizon a little faster than you expected pull out the Arc'teryx Atom LT Jacket to keep your upper body toasty warm. Coreloft™ 60 insulation and Polartec® Power Stretch® side panels hug the body tight but still allow for great freedom of movement. Break it out on the trail or by the fire pit in the backyard when the temperature gets a little extra frosty.

Appalachain Outdoors
Armed with Coreloft insulation to keep you warm and Polartec Power Stretch fabric for superb mobility, the Arc'teryx Atom LT Jacket works as a great mid layer for those frigid days on the trail or on its own during the warmer winter moments.
Oregon Mountain Community
The Arc'teryx Atom LT Jacket is the perfect insulating layer for the coldest of days and an insulating outer layer for cooler conditions and hanging around camp. Coreloft insulation in the torso, arms and hood provide warmth where you want it, while the side panels and underarms use Polartec Power Stretch with Hardface Technology; delivering stretch mobility and breathability.
Use the Arc'teryx Men's Atom LT Insulated Jacket as a mid-layer on days when the mercury goes into hiding or as a stand-alone jacket when there's a nip in the air and you need to travel light.

The Arcteryx Atom LT Jacket features: Coreloft insulation that are fortified in the arms and torso, side panels and underarms that incorporate Polartec Power Stretch with Hardface for superb mobility and breathability, and moisture resistant outer face fabric with DWR finish.

Mountain Gear
Designed as an active-use insulation layer, the lightweight and compressible Atom LT Jacket from ARCTERYX offers maximum warmth with minimal weight and can be worn as a stand alone or for layering under a hard shell.
Ideal for ambitious days when the mercury plummets, this warm mid-layer features composite materials that provide balanced warmth and breathability.
Moisture-resistant, wind-resistant outer face fabric that's breathable and lightweight.
(Durable Water Repellent) helps bead water from fabric surface.
, stretch side panels for enhanced comfort and mobility.
and gusseted underarms for greater freedom of movement.
Soft brushed lined collar.
Laminated, drop-back hem.
Machine wash cold, tumble dry low.
Half-Moon Outfitters
Two Hand Pockets
Want it cheaper? Set your own price.
Enter the price you want to pay and we'll email or text you if we find a store that will sell it for that amount:
Price: $
Your email:
Cell number: (optional, for text message)
Learn how offers work...
8 people have already set their own price.
Average Price History: Price History
Review RatingNumber of Reviews
Also available for: Women
Closure:Full Zip
Clothing Fit:Trim Fit
Fabric:Luminara--100% nylon / Polartec Power Stretch with Hardface technology / Coreloft 60 insulation
Fabric Rating:Wind and water-resistant
Fill Weight:2.1 oz / 60 g
Fit:Trim, hip length
Hood :No
Insulation:100% polyester 60 g/m² Coreloft™.
Insulation Material:Coreloft
Insulation Type:Synthetic
Length:Center back measures 25"
Liner:Luminara: Stretch Nylon Ripstop
Lining Material:100% polyester Power Stretch fleece lining
Lining :No
Material:Polartec Power Stretch with Hardface Technology: 88% Poylester, 12% Spandex, 230 g/m2
Pockets:Two Hand Pockets with Zipper
Recommended Use :Winter, Outdoor Activities
Shell:100% Luminara™ stretch nylon ripstop fabric.
Shell Material:Nylon Luminara fabric
Sleeve Length:36 in
Snowskirt :No
Ventilation :Breathable
Warranty :Manufacture defect
Waterproofing :DWR
Weatherproof Material:Luminara
Weight:11.5 oz / 326 g
Zip-In :No
Compare specifications to related products.

Similar Products:

Arc'teryx Atom LT Hooded JacketArc'teryx Atom LT Hooded Jacket$218.95 - $219.00
Arc'teryx Atom LT PantArc'teryx Atom LT Pant$172.74 - $189.00
Arc'teryx Atom LT HoodyArc'teryx Atom LT Hoody$137.99 - $229.00
Arc'teryx Atom LT Jacket MediumArc'teryx Atom LT Jacket Medium$199.00

Subcategories of Jackets & Vests:

Related Categories:


Arc'teryx Atom LT Jacket Reviews:


This is a great light jacket or heavy midlayer. It is super light and compressible and way warm. The jacket packs well into its own sleeve when it's in your pack, but the core loft springs back quick and warms up fast. Arc'teryx laminates the core loft right to the face fabric so you don't have baffles keeping the insulation together. This is awesome because after use and abuse the insulation is still in the same place it was when you bought the jacket. Unlike baffled jackets if they get compressed for a long time or after a few years of hard use the insulation stops lofting back out and filling the whole baffle and you get cold spots.
The low profile stretch cuffs work great when layering to reduce bulk around the wrist. And the side stretch panels keep the fit snug.
When wearing the jacket alone those side panels help vent excess heat and they made the zipper with out a stop so one yank at the top of the jacket opens the whole thing up to dump heat fast.
I have used this by its self around town because it's classy looking. I have worn it on the skin track by its self and under my shell at a resort. This is a great piece to own if you live or recreate I the cold.
I'm 6'6" and 170 pounds and the large is perfect

Matt Park at on 10/03/2013

When I first received this jacket, I was a little disappointed by the lack of , well, jacket. It's a very thin jacket. For it's price you would expect something like the Patagonia Down Sweater, which has substantially more girth.
But, after putting it to use, I am absolutely pleased with my purchase. For being a thin, slim fitting jacket, it is VERY warm. I use it as my insulating piece beneath an Arcteryx Theta SV, and the combination is perfect. It does a great job on colder days when temps are below freezing, although if the sun is out, and temps begin to climb at or slightly above freezing, I found the combination Atom LT/Theta SV was almost too warm. That's a good thing, in my opinion, being as I am confident I won't need any extra layers unless the temp REALLY drops.
For sizing purposes, I am 5'11", weight 180, have a 33-34 in waist, and I went with a Medium. The medium is perfect as a slim fitting, layering piece, although if I were to use this as an around-town jacket, I would go with a large for a more casual look. For reference, I wear a medium in the Patagonia Down Sweater, which is a nice, casual fit. So the Atom LT does fit slimmer.
In conclusion- great jacket, great for layering, very pleased

Cory Akin at on 03/17/2013

I've owned this jacket just over a year. I wear it everyday from October -March. It is the perfect piece for cold commuting on a bicycle and chilly days to the craig.
I was very skeptical of the Coreloft insulation before I had purchased the jacket, and now I am a believer. It regulates with your body temperature very well. Not quite as good as premium down, but it still works amazingly.
Thinking back on it, I wish I would have gotten the hooded version, but this piece is very nice, but it also passes for looking like casual jacket.
Don't get me wrong, I'm a huge gear whore, but I don't feel the need to have every jacket look like I'm geared up to Summit K2 when I'm going out to dinner.
For sizing, I'm a pretty thin guy. 6'0, 135lbs with an even ape index. And I think it fits very nicely. It's hard to find a medium that actually fits these days.
The only thing I would add would be elastic waist tensioner so the bottom was more form fitting to my actual waist.

Mitch at on 03/19/2013

Read the reviews. This jacket is awesome. I am not going to give you all the details. You will find them in the glowing reviews listed here and on other websites. I am up to my eyeballs in Arcteryx & Mammut jackets because they are the best overall quality. The Arcteryx Atom lt. is my all time favorite jacket. It is incredibly warm and light and looks outstanding. I have worn this jacket all winter by itself and as layer underneath a gore-shell jacket. It is a very versatile jacket for the spring, fall, and winter seasons. I am an athletic 5'9" at 160lbs and a large fits nice with room for a layer underneath. At the risk of sounding obsessed, I bought the hoody and vest version as well. I love this jacket. It is extremely versatile, light, warm, somewhat breathable, wind & water resistant. PS I bought the vest in medium for snugger fit.

dmac0344100062333 at on 02/26/2013

I bought this jacket in 2009 and it remains one of my favorites. It feels great over a wide range of temperatures, say, down to the 20's (if you're active) and up into the 60's. It's light (my medium weighs 12.3 oz) and the trim fit looks great around town AND on the trail. The "Powerstretch panels" do a nice job with ventilation during exertion. Jacket does have an internal chest pocket which is not listed in Product Description above. There's no cinch at the waist hem, but it's stretchy and wind-up-my-back hasn't been a problem. I'm a big fan of the "stretch-knit cuffs" - Arc'teryx chose a sweet fabric and nifty design for this part of the jacket (and the cuffs just feel great on my wrists). I can't recommend this jacket enough.
Pic below shows Atom LT in spitting snow at 11,000 ft in the Wind River Range.

Scott Jasper at on 03/30/2013

This is a great jacket to add to your collection of Arc'teryx, It's a really LT jacket that you can use in a wide range of temps. I started out in 35 degrees in the morning to 62 degrees in the afternoon. The jacket preformed very well, I was not hot or cold in any of the temp ranges. I was perfectly comfortable. I am amazed. The jacket is a real fashion statement as well, I received many compliments on the jacket itself. I will try this jacket even in lower temps to find its limits. Over all this jacket is made very well, and is very versatile for many different occasions. You won't be disappointed with this jacket.

Hank at on 01/25/2014

This is my most grabbed jacket when i leave the house. It just feels cozy and feels like the perfect jacket for a wide variety of Colorado/Utah temps. It's my favorite mid layer for cold weather. It's the perfect weight mid layer under a shell for skiing and under a soft shell for winter hiking. The fleece side panels really help it breath when you're sweating. The styling is plain enough to double as my every day cubical life jacket which makes it easier to justify the price tag.

bri2570352 at on 01/23/2013

I am 6 ft 170 lbs and am usually between a medium and large. I went w/ a medium and it is a bit snug but given the lightweight build, I see this a true mid layer so a snug fit is okay. If I wanted a more relaxed fit, I'd go w/ a large. Nice looking jacket and very comfortable w/ the side stretch panels.

TKnowles at on 08/20/2013

All I can say is that mine was a layer for 12 days between basecamp and the summit of Aconcagua, and it was an indispensable piece of lightweight gear. If it can help keep me warm at 20,000+ feet, it's good for lower altitudes and less demanding conditions. Worth it's weight in gold. I like it so much, I have the hooded and the un-hooded versions.

dooskie at on 04/28/2013

This is a great mid-weight level insulated jacket. It wears well inside a shell for heavy weather. It is a great and light and packable belay jacket. Its hard wearing and can be worn by itself for high output activity. The Large fits great - I'm 6' 170lbs.

Patrick Mulligan at on 08/30/2013