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Size matters: the thick and comfy Big Agnes Air Core SL Sleeping Pad offers more airy cush than self-inflating pads, and its rectangular shape gives you more room for tossing and turning when your tent-mate is sawing logs. An internal heat-reflective coating and I-Beam construction that gives consistency and stability ensure efficient comfort, even when the temps drop to near-freezing. Rest your heavy eyes in superlight comfort.

  • Nylon ripstop top and bottom is tough, durable, and super-light
  • Innovative I-beam construction eliminates welded seams thus cold spots and delivers consistent airflow and stability
  • Internal, heat-reflective polyurethane coating helps seal in the warmth on those chilly nights
  • Comfort-rated at 35F, for three-season fun
  • Rectangular shape adds coverage at the corners so you have wiggle room
  • Durable inflation valve prevents leaks and inefficient inflation
  • Ample 3.75in thickness offers more comfort than self-inflating pads
  • Stuff sack included for convenient portability
  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

air mattress for the backpacker

  • Familiarity: I've put it through the wringer

this is a great air pad , i took it 27 miles thru montana worked well every night. i never was cold on the mattress side , the down side its hard to get all the air out of it even after 5 days of use i havent got a good method

Perfect Match w/Big Agnes Bedroll

  • Familiarity: I've put it through the wringer

Thanks backcountry for delivering quickly. Only 5'6" but appreciated extra length. Perfect width as well - teamed with Big Agnes Bedroll and able to turn side to side as needed. Used 6 nights in row! Supported me well (at 165 lbs). Folds compactly ... but chose to store (and inflate) inside bedroll. Couldn't be happier.

Great Buy

  • Familiarity: I've used it several times

I got this on recommendation from my Gearhead and I have to say I love it! I have used it several times camping and even on our hike to the bottom of the Grand Canyon. I like how easy it is to deflate and roll-up--doesn't take much space or weight in the pack. The added area for the 'pillow' is a nice feature, but doesn't work as well as a separate inflatable one.

I like it!

  • Familiarity: I've used it once or twice and have initial impressions

Just recently got the 25" Air Core mostly because it has a lower R insulation rating than the QCore which I also have and like a lot but is too warm in hot weather. I will be using it in the tropics for kayak camping and needed more back comfort than my Thermarest provided. It also fits quite nicely inside my Eno Junglenest hammock. Very comfortable when aducted to the correct air pressure. I do have the advantage of pumping it up with my kayak (inflatable) pump. It's quite light for what it is and packs down small. Time and some rigorous field use will tell how it holds up .


  • Familiarity: I've used it several times

I bought 2 of these pads one for me and one for my girlfriend. My first thought was wow this is light but how well will it hold up. I don't toss it out next to the campfire but I definitely don't baby it after the first season of about 30 nights on them and being packed for about 250 miles on trails neither of us has had one flat. Also I'm 5'10" about 230 lbs and it is amazingly comfortable for me. The ability to sleep on your side in the backcountry is something I never thought I could have this works great!

Nice Pad.

  • Familiarity: I've used it several times

This pad made my nights on the hard bunks of the AT shelters much more comfortable. Plus its lightweight and small packing size made it all the more appealing. It is a little loud at night with its crunching sound, but that has been typical for similar pads. I also wish it was a hair wider. All in all, it is a great product.

Too narrow for thickness

  • Familiarity: I've used it once or twice and have initial impressions

You would think extra thickness translates into a more comfortable pad, but that's not what I found. I am 6'4'' with a slim build but broad shoulders, but have slept comfortably on 20" pads before.

The issue with this pad is that because it's so thick, if you arms hang off the sides at all they have a long way to go. This ended up being really painful on the shoulders after a whole night of dangling arms and alternatively trying to hold them back on the pad.

This pad could work fine for someone with a smaller build, but if you find any part of your arms coming off a 20" wide pad, it likely won't.

will the wide/long version work with the big agnes deer park sleeping bag?

Hey Jared,

Yes it will work.

The Wide/Long version of the Air Core SL pad is 25"x78" and that is the exact pad size intended for the Big Agnes Deer Park sleeping bag.

Shoot me an email anytime you have questions!

Jared D.

Expert Gearhead


I have a BA Yampa sleeping bag, and an...

I have a BA Yampa sleeping bag, and an insulated air core pad (3.25" thick). I need another pad, and am looking at getting the Air Core SL to save a few ounces, but am wondering if the added thickness (3.75") will make it difficult to fit it into the sleeve on my Yampa?