Big Agnes Q-Core SL Sleeping Pad

Priced: $139.90 - $219.95 Rated:   - 4 stars out of 5 by 73 reviews.
Big Agnes Q-Core SL Sleeping Pad -
The Big Agnes Q Core sleeping bags won the 2012 Backpacker Magazine Editors' Choice for best sleeping pad.
Lightweight and compact three season pads at 3.5" / 9 cm thick for extra comfort.
Estimated R-Value of 5.
X-Static synthetic insulation with the natural performance of silver filament to enhance thermodynamic, anti-microbial and anti-odor properties.
Alternating I-Beam construction creates a smoother, more comfortable feel.
Durable, lightweight nylon rip-stop top and bottom.
Internal polyurethane coating.
Add a closed cell foam pad in colder temperatures for extra insulation.
Durable inflation valve.
Store your Big Agnes sleeping pad unrolled with the valve open.
Includes stuff sack and repair kit. The repair kit is in a small pocket on the inside end of the stuff sack. It's sort of hidden, so look twice.
Each sleeping pad has been individually inflated and tested.
If a good night's sleep is high priority when you're outdoors, a Big Agnes insulated sleeping pad may be your new best friend.


  • Made from superlight ripstop nylon, this 3.5 in. thick deluxe inflatable pad packs down small, and is light and durable enough for backpacking
  • Alternating I-beam construction delivers a smooth, consistent, and comfy feel
  • Integrating vertical and horizontal tubes in the construction, this seam-welded pad provides consistent airflow for stability, support and smooth feel
  • Durable, light-weight nylon rip-stop top and bottom


  • For quick inflation/deflation, Big Anges Insulated Q-Core SL pad features an airtight, nonbreakable brass valve with plastic coated mouthpiece
  • Ample 3.5in thickness offers more comfort than self-inflating pads
  • Light and compact three season pad, with 3.5 in. of comfort
  • Larger outsider air chambers keep you cradled in the middle of the pad
  • Add a closed cell foam pad in colder temperatures for extra insulation
  • Each pad individually inflated and tested


  • X-Static® synthetic insulation provides superior warmth and comfort; X-Static has antimicrobial properties that help keep odors at bay and enhance thermal regulation
  • X-Static synthetic insulation with the natural performance of silver filament to enhance thermodynamic, anti-microbial and anti-odor properties

Weather and Wind:

  • I-Beam construction eliminates welded seams to reduce cold spots and ensures quick inflation/deflation


  • Size


  • Comfort-rated at 15F for three-season fun


  • Includes stuff sack and repair kit. The repair kit is in a small pocket on the inside of the stuff sack


  • Wide & Long
  • Petite
  • Durable inflation valve prevents leaks and inefficient inflation
  • A superlight version of the Q-core
  • Internal, heat-reflective polyurethane coating helps seal in the warmth on those chilly nights
  • Regular Mummy
  • Warmth rating to 15°F (-9°C); estimated R-Value of 4.1
  • Long Mummy
  • 20" x 72"
  • Internal heat reflective polyurethane coating returns heat back to your body for additional warmth
  • Stuff sack included for convenient portability
  • Rectangular shape adds coverage at the corners so you have wiggle room
FEATURES of the Big Agnes Q-Core SL Insulated Air Pad.
SPECIFICATIONS of the Big Agnes Q-Core SL Insulated Air Pad.


This Big Agnes Insulated Q-Core SL (Superlight) sleeping pad blends supportive construction, synthetic insulation and lightweight fabrics for a comfortable sleeping surface on the cold, hard ground.


The toasty-warm Big Agnes Q-Core SL Insulated Sleeping Pad puts a layer of high-tech, thermodynamic X-Static insulation and heat-reflective polyurethane between you and the cold, cruel earth. Its 15F comfort rating gives you plenty of three-season camp time, and its bomber yet lightweight nylon construction and durable valve mean the triple-seasons can keep on coming.

The Q-Core SL is the superlight version of the regular Q-Core from Big Agnes. It is one of the most comfortable three season pads on the planet. The X-Static synthetic insulation and the natural performance of silver filament enhances thermodynamic, anti-microbial and anti-odor properties. The alternating I-Beam construction creates a smooth and comfortable feel.
With absolute comfort every time you roll it out, the Insulated Q-Core - Long by Big Agnes® is the light and compact three season pad for all your amazing outdoor jaunts.
X-Static synthetic insulation with antimicrobial and anti-odor properties.
I-Beam construction creates a smoother, more comfortable feel.
Lightweight, durable nylon ripstop top and bottom.
Brass valve with plastic coated EZ-Flate™ mouthpiece.
Store unrolled with valve open.
Please make sure to look thoroughly.
Eastern Mountain Sports (EMS)
Thick and comfortable, the Big Agnes Q-Core is the insulated air mattress you have been waiting for.

Country of Origin: Imported

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Average Price History: Price History
Review RatingNumber of Reviews
Bag Shape:Rectangular
Dimensions:20 x 78 x 4 (in) / 51 x 198 x 10 (cm)
Dimensions - metric:Synthetic
Fill Material:X-Static
Insulation:Featuring X-Static all natural
Length:78 in.
Material:Superlight Nylon Rip-Stop
Packed Size:5 x 10 in / 13 x 25 cm
Pad Type:Air Pads
Pad length (in.):Rectangular
Pad thickness (in.):Rectangular
Pad width (in.):Rectangular
R-value:5 estimated
Repair kit included:Air pad
Rolled size:5.5 x 9 (in) / 14 x 23 (cm)
Shell Material:Nylon
Sleeping Pad Type:Manual Inflating
Sleeping pad shape:Backpacking
Storage Sack:No
Stuff Sack:Yes
Stuff sack included:Air pad
Stuff sack style:Tube
Temp range:15 degrees F / -9 degrees C
Temperature Rating:15° F / -9° C
Thickness:3.5" / 9 cm
Valve:Durable inflation valve
Valve type:Plastic
Weight:23 oz / 652 g
Weight - metric:Synthetic
Width:20 in.
Compare specifications to related products.

Similar Products:

Big Agnes Insulated Q CoreBig Agnes Insulated Q Core$119.95 - $199.95
Big Agnes Insulated Q-Core PadBig Agnes Insulated Q-Core Pad$119.94 - $199.95
Big Agnes Q-Core SL Insulated Mummy PadBig Agnes Q-Core SL Insulated Mummy Pad$159.90 - $169.95
Big Agnes Insulated Q-Core SL Inflatable Sleeping PadBig Agnes Insulated Q-Core SL Inflatable Sleeping Pad$139.94

Subcategories of Sleeping Bags & Pads:

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Big Agnes

Big Agnes Q-Core SL Sleeping Pad Reviews:

Positive Reviews:

Great for side sleepers

I've been using the Therm-a-rest Z Lite Original pad for the last few years to save weight, but for a side-sleeper like myself it's incredibly uncomfortable. Honestly I've never had a worse sleeping experience. The lack of sleep and morning pain make it just not worth it to save a few ounces.

I decided that for this year I wanted an inflatable pad. I got this pad on ad over the Memorial Weekend sale, and combined with my rebate I got it at a great price. I went with the "Long" version, which (by manufacturer claims) measures 78 inches by 20 inches.

I haven't had a chance to use it in the field yet, but I briefly inflated it and tried it out. It inflates about the same as any air pad, though the valve is very nice and easy to close. It also seems very comfortable while laying on my side due to the thickness: I didn't "bottom" out while testing it. It is fairly narrow, and even my 12 year-old son commented on how "skinny" it is. However, even while laying on my side my arms didn't hit the floor. I lay on my side while sleeping and don't move much, so it should be fine. I would have preferred the wide version, but unfortunately it was sold out at the time. I may or may not exchange this for the wide version as I test it further.

It deflates about as easy as possible. (1)Open up the valve and roll it up from the bottom toward the valve end (top), which pushes out all the air (2)Close the valve so air doesn't get back in, unroll it and fold it in half 3 times from the bottom to the top (3)Finally, roll it up on the side and it will fit perfectly into the included stuff sack. Once it's in the stuff sack you may want to open the valve to let it vent out any moisture from your hot breath.

One thing that bothers me slightly, is the measurements for this pad are way off. Inflated I get 73.5 inches (!) by 18.5 inches (indicated 78 inches by 20 inches). That's a pretty significant difference, particularly for the length. I'm 6 foot 1 inch tall, and my feet lay just above the end of the pad. I'd say if you're 6 foot or taller, definitely go with the long version or you might have dangling feet. My guess is the manufacturer tried to inflate the measurements (no pun intended) for marketing purposes by measuring it without air. This is slightly misleading, hence the 4 stars.

Seems to be a great pad, only time will tell.
dhilberg at REI on 05/05/2013

Happy Camper

This is my second ultralight pad, my first being the Thermarest NeoAir, so I have another product in this same category to compare it to.

What I like about the QCore SL:

- Comfort. The depth of the pad (3.5 inches) allows you to be on bumpy or uneven ground and still feel like you're almost laying on a pillow top mattress. I like the individual cells better then other manufacturers which have long tubes either running lengthwise or width wise.
- Perceived Durability. The material, although light, feels strong to me for its weight. So far I have not had an incident with this material. I do use a tent footprint and I only use this pad inside the tent.
- Weight. This weighs a bit more than my Thermarest, but not much more. It is a light pad. The other factors I just cited outweigh the slight weight difference.
- Quiet. No crinkly noises to cope with.

Things to consider:

- It takes me 22 really deep breaths to fill this. Taking breaks so I don't pass out, this takes several minutes to fill. It initially took longer to empty than I had expected. I found if I lay on it with the valve open, that gets the majority of air out the easiest way possible.
- The pad is most comfortable when not blown up to max capacity. For me, I'd say the 85% mark is about ideal.
- I got the 72"L X 20"W version, and I'm 5'5 and 130lbs. The pad seems pretty narrow at first (my other pad is 24" wide) but surprisingly after sleeping on it several nites, I never got the impression that it was "too small". E.g., I never rolled off (possibly thanks to the outside cells which are taller than the inside cells) or had limbs noticeably hanging off the sides. If you are a much wider person than I am, you may have a different experience on this topic.
- I thrash around a lot while sleeping and the pad is smooth and not "grippy", so moving around was not a problem at all.

I would definitely recommend this pad.
Veloz at REI on 04/04/2013

Excellent Sleeping Pad

This is the sleeping pad that made me give up my hammock. Until I tried this pad I was convinced that hammock camping was the only lightweight way to get a good night sleep in the back country. However, I was dead wrong.

Last month I went on a trip in sub freezing temps, since hammocks are a bit cold, I decided to use a cheap tent I already had, and try out a modern sleep pad. So, I went to my local REI and spent over an hour testing every sleeping pad there. Many of the heavy ones were comfortable, but as I like to keep my base weight under 16lbs, they were simply too heavy for my personal taste.

Since I always prefer to go lighter whenever possible, I tried out the Therm-a-Rest NeoAir XLite. I was especially interested in that pad since I saw that it had many good reviews on the web. However, I found that the crinkly noise it produces is too loud for me to ignore. It would be like trying to sleep atop a space blanket. So, I narrowed it down between the Big Agnes Q-Core SL, and the Therm-a-Rest NeoAir All Season. That was a tough choice for me, and I do recommend trying both out for yourself. But, ultimately, the Big Agnes Q-Core SL won out for me.

The only downside I can think of is it is a bit tough to inflate. I plan on replacing one of my dry bags with the Big Agnes Pump House bag to use for inflation.

To summarize, I'm very glad I found this pad I have since forgotten all about my hammock.

Side note: with stuff sack and patch kit my 20x72" pad weighs in at 19.5oz on my scale.
Eric - NC at REI on 04/04/2013

I heard about the original Q-Core last year, and almost bought one just based on the comfort alone, but heard about this SL version coming out. Waited, and glad I did, for several reasons, although I am a bit disappointed.
I originally went with the regular sized pad, and although light, durable, and really comfy, it was just too narrow. It was about 17.5 inches wide inflated, like other reviewers have stated. I didn't want to believe what other had said, but it's true, it's just too narrow. I'm not a big guy, 5'10", 165lbs, but my elbows hang off the pad, which usually isn't a big deal, but when the pad is close to 4 inches from the ground, it feels weird.
I contacted Big Agnes to see if they had plans to correct the issue, and they said they don't, although they were more than happy to take it back and give me credit for it towards something else. I opted to do it through backcountry instead, and got the Long/Wide version on sale at 25% off. HUGE difference. Although I don't need the length, the width is super nice. Sure, it's 5 or 6 oz heavier, but I'm not into the UL or XUL thing, so it works. I have a 16oz Thermarest pad I can use if I feel like conserving weight, but this thing is ridiculously comfy, and really wide. I've used it a few times, and it's fantastic. Very pleased, although at regular price, $220 would be pretty steep.

gilipollas at on 07/24/2013

Love this sleeping pad

This pad has by far given me the best sleep in the wilderness. I am a girl and a side sleeper and this is so comfortable on my hips! I also found it to be quite warm

Note to any back sleepers: Because it's 3.5 inches thick, if I lie on my back with my arms by my side, they fall off the mat and are noticeably below my body. For this reason when lie on my back I lay my arms on my chest/abdomen.

I am a lightweight backpacker so I love the weight. It's not much heavier than my ultra light (and ultra short and ultra thin!) pad. The few extra ounces or definitely worth the comfort here. It also packs up small.

It seems pretty durable for being so light weight. I've only used it a few times so I can't speak to it's long term durability. I wouldn't sleep with it directly on the ground if there were any sticks or rocks, but I am also not afraid of popping it.

Given the volume it takes many breaths to fill up. As a backpacker hopefully you have some good lungs :) At high altitude I did have to blow it up half way, take a 30 second breather and then continue to blow it up. I personally find this completeley fair trade off for the comfort and light-weightness.

All of my friends are jealous when we go backpacking.
FreshAir3 at REI on 06/06/2013

Skeptical, now a believer

I had a dividend to use. I've used therma rest for years, eventually purchasing some expensive ones. I decided to branch out and based my search on thickness and weight. A compromise of the two if need be was necessary but I eventually researched this product and figured on spending some serious cash on it. I've used it several times now and can not speak more highly of it. While it inflates in the traditional blow until your blue in the face through a tiny hole, it blows up in the usual allotted time based on effort. Its extremely comfortable to sleep on, nice and thick. My bag sticks well to it, no problem there. That was a concern on mine when I initially set it up the first time but has yet to be a problem. I have yet to slink down off of it in my bag on a gentle slope only to have to 'worm' my way back up. It packs up extremely well, taking little room in a pack. It holds the air well and there are no problems with sleeping on my side and having my hip dig into the ground. I used it this last weekend at an altitude over 8K, woke up with snow on my tent and had no idea of the cold weather, a great sleep had by me due in large part to this product. Good luck with your camping adventures.
canucking at REI on 05/05/2013

Small, Warm, Light, Comfort - Full Pkg!

This pad really packs up small and is very light, especially given the R4.5 rating. I used this pad for the first time last night and it took a solid 15-17 breaths to full inflate (seemed like a lot at the time but it does blow up pretty thick).

The temperature was approximately 30-32F and I felt very warm all night; I wouldn't hesitate to use it in colder temperatures. Upon first glance the pad seemed to be really narrow but during use I didn't have any real issues staying on it. I definitely did not feel like the pad was slippery. In short, I have never slept as well (while camping) as I did last night; the comfort of this pad is amazing.

All in all I still feel a little sick I spent what I did for a mere sleeping pad, but given all of the positives I would do it again. Only time will tell how it holds up to multiple uses. The only downside was it seemed to take quite a bit of effort to deflate. I haven't used but one other inflatable pad so I can't really say if this is normal or not.

I say buy it!
greengst at REI on 01/01/2014

Like sleeping at home in bed!

For that past three years I've been backpacking with a Thermarest Z Lite. I liked that pad for no risk of de-inflation during the night, and super light to carry. However, I hated how bulky it was, even strapped outside my pack. So I decided to give this Q-Core SL a try on three recent nights in the Three Sisters Wilderness. I slept like a baby, on the petite size, and I'm a 5'8" 175 lb male. I never did that on the Z Lite, I tossed and turned a lot. I don't mean to slag the Z Lite, but sleeping on this is an incredibly different experience. I disagree with every negative point others have made--this pad is comfortable, quiet and I didn't slide off. With about 30 puffs by mouth it was inflated firmly and I never felt the ground, even side sleeping. It never got down much below 50 so I can't verify warmth, but I'm confident it will be far warmer than the Z Lite also. I'm sold on this and I doubt I'll ever use any other pad.
Trying To Be Traceless at REI on 09/09/2013

nice PAD!

this is a pretty good pad. not like my last crinkly pad.

it is narrow tho. you have to sleep on it like a mummy. and if your tent site is less than level (mine rarely is), you will find that gravity will let you slip on this pad to some weird contorted position. not a huge problem for me, because i am usually exhausted and can sleep anywhere at that point. one morning i did wake up to see my brother all scrunched up a lower corner of the tent.

i'm still playing around with pad firmness. one morning, i did find the pad softer than i remembered. i blew it up a few more puffs, and it seemed to hold up.

this is my first trip with it. i have another one in a few weeks.

it is nice to reach up right before you wake up to open up the valve and let your body press out most of the air. it goes down fast.
sealevel lung capacity at REI on 06/06/2013

Best Sleep I ever had in the mountains

This thing is super comfortable. I am 5'-10" and 225 lbs and at 3.5" thick, properly inflated you can sleep on your side and still not feel anything but air underneath you. I bought the Long Wide version for the extra 5" in width, which I think most people would benefit from. You gotta be pretty skinny to sleep on something 20" wide and at only 5oz more than the regular, it was a no brainer for me. Another thing I love about this is, it's the perfect size for my Big Agnes Seedhouse SL2 Tent. I always orient my tent so my head is on the high side if there is any slope. So, lengthwise it can't slide down my tent since it fits it perfectly. I recently took it to Big Bend NP with low temps in the lower 40's in the mountains and it kept me very warm too. Is it expensive, yes, but it is worth it if you want the ultimate in space saving, light weight, comfort. Period.
Backpack at REI on 04/04/2013

Negative Reviews:

I was very excited upon hearing that the Q CORE (the most comfortable pad out there, in my opinion) was going to be upgraded to an ultralight format that would only be slightly heavier than my EXPED UL7.
After picking up the pad I must say that it certainly is comfortable. The unique air chamber system leads to an incredibly cushioned pad (especially for back sleepers). The R Value is terrific and the pad deflates and stores terrifically small. The pad is also tougher than expected, despite the Ultralight fabric.
The downside? The pad is NOT sized correctly. The regular size is not 20"x72". It is much closer to 17.5"x70". This makes a BIG difference as you will NOT be able to rest your arms on the pad at ANY point while laying on your back. For side sleepers, some part of your body (either your knees or your butt) will be hanging off the pad.
To suffer both a size and weight penalty for this pad (despite how comfortable it is on my back) is too much for me. Unless you're a smaller person or you don't mind springing for the Large/Wide size, I would steer clear.

Ryan Silve at on 03/08/2013

Measurements Wrong!

The measurements for the 20 inch wide came in at 18" by 75" long (for long version). Taking it back to REI, weight is good over the original Q-core but dimensions are not equivalent. The raised ribs on the edges do not puff up as high as the original q-core as well, eliminating that feature as well. Probably because it also has less loft than the original as well (according to Big Agnes web site). I was fooled into believing this pad was essentially the same as the Regular BA Q-Core but 10 ounces lighter, but it is not! I will keep my original Q-Core as it is very comfortable just a little heavy, but that is the price of comfort!
NMPacker at REI on 05/05/2013

slip and slide

Great product, very comfortable. However, the fabric is way too slippery and at least once a night I slide off the pad. This is more pronounced that other pads because it is 3 inches high, so when I start to slide I end up off the pad. I am a side sleeper and tend to move around a little at night. Putting the pad in a bivy sack on perfectly level ground doesn't help. Otherwise the pad is great, but it is going back because of how slippery it is. My friend has a NeoAir All season pad that I have used and it is just as comfortable and isn't so slippery.
Yellow Violet at REI on 04/04/2013

Smaller than advertised

We just got this delivered on back order and blew it up along with another old maroon BA insulated pad to compare. Turns out the Q-Core is at least a half inch short all the way around (he thinks more like 1.5" total on the width, 2" total on length). We're not exactly giant people and we're going to have to return this- it's narrow enough that it will probably be annoying.
DirtHippy at REI on 01/01/2013

Not a fan

After reading the many great reviews on this pad I purchased it and went on a 7 day backpack. The pad is rather narrow, compared to a thermarest, and the tough part is it is 3.5 inches tall. Because it is so tall one slip off the pad and you fall to the ground. My tent mate also complained that it was very loud.
PDX Backpacker at REI on 09/09/2013

Overpriced, uncomfortable

I thought I was buying the best, especially since it cost so much. This pad was very uncomfortable however. Much, much less comfortable than a simple 1" self inflating pad.

It is also very slippery. That, combined with its thickness, makes it difficult to keep a sleeping bag on top.
YossarianZ at REI on 08/08/2013


Felt like i was riding a balloon, rocking back and forth if in the middle, but sliding off the sides if not perfectly placed in the middle. Made so much crinkly noise when i moved on it, my friends in nearby tents could hear me. And it was slippery to boot.
billster at REI on 07/07/2013

Neutral Reviews:

Comfy but narrow

I initially returned this pad to REI because of its width. After inflating the pad at home I found that when laying on my back my arms hung off off of the sides, which is weird since I'm kind of smallish-average size woman and my shoulders are definitely more narrow than most. This had not been a problem with my self-inflating 20 inch pad.

However, I could tell right away that the pad was comfy/warm and would have been okay if I would sleep on my side. With REIs guarantee in mind I thought what the heck I'll give it a try. My hubby (strictly a side sleeper) thought it was comfortable. And arms held in by my mummy bag, I stayed on the pad okay but had to move around carefully to keep from slipping off.

While I'm glad I gave the pad a second chance (thaks REI for such a great return policy), I can't recommend it unless you are pretty small or sleep on your side and/or don't move around too much in your sleep. Most would do better with the wide version.

Blowing it up took 22 deep breaths. Deflating was definitely faster and easier than my self-inflating pad. No prob getting it back in the stuff sack.
Ubikwity at REI on 05/05/2013

I have the Original Q-Core and it is 20 in wide inflated. I measured a Q-Core SL mummy and a new Insulated Air Core mummy and they were both right around 18 inches inflated. I will say I have the BA lost ranger and the original Q-Core barely fits the sleave. The smaller footprint on the SL might actually work better with system. I am going to contact BA and inquire.
Answer from BA: Yes the Q-core SL is not correct in size and weight. It is actually 1-2? smaller width and length depending on model and weighs 1-2 oz heavier depending on model.
This is something that they realized after production and they are aware of it. If anyone has an issue we can cover it with our returns but BA will also help out any customer that is upset.

Kyle at on 04/26/2013

I slid off all night

I took this on a five day backpacking trip in the Colorado mountains. It was comfortable at first, but it is a bit too narrow, and unfortunately, I slid off it all night. I even had straps around it tied through the loops on my bag. And still I was slipping and sliding. You also have to inflate it by mouth, which wasn't a huge deal to me but might be to others. It is nice to be able to sleep on my side, though.
G the Hiker at REI on 08/08/2013

Not as advertised

When I viewed the pad, I knew something was up. I pumped it up to find that it's a full 1 1/2 inches too narrow, and several inches too short.
I measured it thinking it must be my imagination. Nope. It's not as advertised.
It doesn't sound like much of a difference, but it's the difference between your arms staying on the pad, and laying on the ground (for me at least). I can't recommend it for that reason.
windblownmonkey at REI on 05/05/2013