Big Agnes AXL Air Sleeping Pad Review

Big Agnes AXL Air Sleeping Pad Review

The Big Agnes AXL Air sleeping pad is a warm weather ultralight sleeping pad (mummy or full size) that beats the pants off the Therm-a-Rest NeoAir XLite in terms of comfort and compressibility when packed. But it takes a lot of effort to inflate by mouth and you’ll definitely want to bring a pump sack along to inflate it. If you’re counting ounces, that’s going to add to the total weight required to use the AXL Air pad, which might make you think twice about switching to it.

Specs at a Glance

  • Weight: 9.6 oz (9.9 oz actual tested, mummy size)
  • Breaths to inflate: 28
  • Pump sack: Not included (2.9 oz)
  • Dimensions: 20″ x 72″ x 3.75″
  • Valve: single, flat valve
  • Insulation: Heat reflective lining
  • Temperature rating: “Warm weather”


The AXL Air is comfortable to sleep on and includes a heat reflective coating to keep you warmer at night. The AXL Air is also extremely quiet, without the notorious potato chip sound that often accompanies sleeping pads like the Therm-a-Rest NeoAir XLite. It’s covered with a high tenacity nylon ripstop for enhanced durability and low weight, with individually sprung cells like a spring mattress. The individual cells support your body contours and are more comfortable than pads with horizontal or vertical baffles.

The AXL Air is also quite a thick sleeping pad, a full 3.75″ deep, making it comfortable for back and side sleepers alike. Thicker side rails help keep you in the center of the pad at night. However, if you kneel on the pad, your knees will hit the ground below. Something to be aware of.

Inflation and Deflation

The AXL Air has a single flat valve that is used for both inflation and deflation. While you can inflate the pad by mouth, it takes me 28 breaths to blow up. Give the amount of effort required (and dizziness), I’d recommend inflating the pad with the Big Agnes Ultralight Pump Sack which weighs an additional 2.9 ounces. Unfortunately, pump sacks from other companies, such as Sea-to-Summit or Exped, are not compatible with the AXL Air valve.

Flat valves are more durable than stick valves and easier to use with pump sacks
Flat valves are more durable than stick valves and easier to use with pump sacks

A pump sack helps limit the amount of moisture you blow into a pad with your breath and can eliminate the growth of mold inside the pad itself, which will degrade the material over time. Sleeping pad companies, including Big Agnes, have gotten better about including fungicide treatments in their pads at time of manufacture to help retard it’s growth.

Once inflated, you can adjust the firmness of the pad by releasing air or blowing more in. To deflate, you need to insert the pointed end of the valve cap into the valve to keep it open so air can escape. To deflate, simply roll the pad up to force the air out. Then fold it up along the pre-scored folds provided and roll it up for transport. The AXL Air is astonishingly small when packed up.

The AXL Air is quire compact when deflated and rolled up.
The AXL Air is quire compact when deflated and rolled up.

Temperature Range

The Big Agnes AXL Air is a “warm weather” inflatable sleeping pad, which in Big Agnes parlance means that it’s a sleeping pad best used in summer temperatures of 50 degrees or warmer.

While I’ve taken the AXL Air down to 55 degrees for testing purposes, I wouldn’t recommend going lower than that without bringing a closed cell foam pad, like a Thermarest Z-lite, to layer under it in cooler temperatures. Your experience using the AXL Air will also be very dependent on the temperature rating of your sleeping bag or quilt because a warmer bag can counteract the cooling effects of a lightly insulated pad.

Unfortunately, Big Agnes decided not to publish an R-value or a recommended temperature range for the Air AXL Sleeping Pad. Why? For one, it’s expensive to run tests on all of your products, which is often the reason why smaller companies don’t publish sleeping pads ratings. Two, because there is no industry-standard way to measure sleeping pad R-values or recommended temperature ranges. Three, the best way to blunt a competitive product comparison is to NOT to publish an inferior value…when a company like Therm-a-Rest publishes R-values for all of their sleeping pads.

While I can understand why Big Agnes didn’t want to publish “potentially” misleading metrics about this sleeping pad, I think not providing consumers with any directional information about their warmth relative to ALL the other sleeping pads that Big Agnes makes, is a mistake. Forget the competitors for a moment. If one assumes that Big Agnes uses the same testing methodology in-house across all of their products, a relative warmth ranking would be useful information for existing customers wanting to compare different Big Agnes sleeping pads.

The AXL Air is pre-creased in quarters making it easy to roll up small when deflated
The AXL Air is pre-creased in quarters making it easy to fold and roll up small when deflated

Whatever, the reason, I think Big Agnes and other brands that do not provide R-values or temperature guidance for their sleeping pad products are doing their customers a dis-service, and shooting themselves in the foot, at the same time. Get creative folks! Push the R-value standards process forward or form a smaller consortium with other brands, in the interim, to publish better temperature guidance for sleeping pads. Leadership has its rewards.

Comparable Lightweight Sleeping Pads

Sleeping PadTypeSizeWeightASTM 3340 R-ValuePrice
Therm-a-Rest NeoAir UberLiteAir Pad20" x 72" x 2.58.8 ozR=2.3$195
Nemo Tensor Insulated Short MummyAir Pad20" x 48" x 3"9 ozR=3.5$130
Big Agnes Insulated AXL AirAir Pad20" x 72" x 3.75"11.6 ozR=3$180
Therm-a-Rest NeoAir XliteAir Pad20" x 72" x 2.5"12 ozR=4.2$185
Therm-a-Rest NeoAir Xlite Women'sAir Pad20" x 72" x 2.5"12 ozR=5.4$175
Therm-a-Rest NeoAir XThermAir Pad20" x 72" x 2.5"15 ozR=6.9$215
Big Agnes Q-Core SLXAir Pad20" x 72" x 4.25"16 ozR=3.2$150
NEMO Astro Lite InsulatedAir Pad20" x 72" x 3.5"18 ozR=2.6$130
NEMO Tensor Air PadAir Pad20" x 72" x 3.0"13 ozR-1.6$140
Sea-to-Summit Ether Light XT Insulated Air Pad21.5" x 72" x 4"17.3 ozR=3.2$190
Sea-to-Summit Ether Light XT Insulated Women'sAir Pad21.5" x 72" x 4"17.5 ozR=3.5$190


The Big Agnes AXL Air is a lightweight, comfortable, and compressible inflatable sleeping pad, best used for warmer weather, 1-season backpacking. Weighing just 9.6 ounces (for a 20″ x 72″ x 3.75″ mummy pad) it’s best coupled with a 2.9 oz Big Agnes pump sack because it takes so many breaths to inflate.

If reducing your pack weight is your primary motivation for selecting an AXL Air, you’d probably be better off buying a sleeping pad that can be used across a wider range of seasons and temperatures. I’d recommend the Therm-a-Rest NeoAir XLite, which weighs 12 ounces, has an R-value of 3.2, and can be inflated by mouth without a pump sack. Therm-a-Rest also tests their products in a cold room to ensure that their real world performance is consistent with their published R-value metrics. Big Agnes also sells an 11.9 oz Insulated AXL Air Pad, but it has many of the same inflation and temperature rating issues of the uninsulated version reviewed here.

If, on the other hand, you really are just interested in a comfortable, summer sleeping pad, the Big Agnes AXL Air has a lot going for it. It’s less expensive, lighter weight, and more comfortable than all of Big Agnes’ other lightweight pads, in addition to those sold by Therm-a-Rest. I’d still recommend using it with a pump sack, but the comfort of AXL Air sprung cell construction and cover fabric is really hard to beat.

Big Agnes provided the author with a sleeping pad for this review.

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  1. Looks to me like they are missing the target on two points.

    1) The pump sack is way bigger than it needs to be, they could probably drop the weight in half by cutting off all that extra length. So what if it takes twice as many pumps, it’s not like you’re doing anything else in camp… The one I use with my X-Lite is about 18″ long and maybe 10″ in diameter when inflated, and off the top of my head it’s about 1 oz (the “valve” is non-existent, of course, due to the stick valve, so much lighter in that area).

    2) Why don’t they have a shorty version? If it’s a summer-only, comfort pad, you don’t need anything under your legs but for your pack, so again they could drop the tonnage quite a bit with another model. I see they have a 48″ in their semi-insulated Air Core Ultra, but it’s heavier than the full-size AXL. Weird.

  2. I tried the insulated version in the store. It was quite slippery to lay on. Is the uninsulated version slippery at all?

  3. Another excellent Section Hiker review, thanks! Some thoughts on my experience with the uninsulated mummy version:

    !. The valve is conveniently located to over inflate the pad then let air out to the desired comfort level, but not sure you can add air while laying on the pad.
    2. There is a hack out there to make a fitting that allows the use of the Schnozzel (spelling?) to inflate the AXL.
    3. I was cold at 60 degrees but I run cold. Paired it with a Z-Lite but still cold with the Z on the bottom but toasty with Z pad on top of the AXL.

    So far I am happy with the pad and got the uninsulated version purposely to pair it with the small Z Lite so that I have some redundancy with pads.

  4. Does Big Agnes state this pad has a 50-degree limit, or is that your take? The AXL insulated version has a 15-degree limit (per the box; their website now seems to be silent) but most say 30 degrees is more accurate for the insulated pad, and I agree. Also, my insulated pad is a full ounce (10%) heavier than advertised, so it’s heavier than the Xlite. Most gear manufacturers exaggerate weight, but Big Agnes is worse than most with their false advertising practices.

    For me the AXL is slightly more comfortable than the Xlite, so that’s a definite plus.

    • Big Agnes doesn’t provide any temperature guidance for this pad at all. 50 degrees is my estimate, but I also chatted with big Agnes customer support about their recommendation (since they’ll tell you the truth)and they also recommended switching to the insulated AXL for temperatures less than that.

  5. In my experience it takes about 15 breaths. It is a very fast and easy process to inflate. It might depend on how aerobically fit you are. Still, I’m not concerned with spending a few extra seconds to inflate a pad.

    I haven’t used it in the cold, but I used the un-insulated version on a 55 F night and was very warm, with sleeping bag open and limbs hanging out to stay cool.

    It is noisy, but I live in the city and if I woke up every time there was a noise I would never sleep.

  6. I purchased one of these in Monson, Maine during the southbound portion of my AT thru-hike last summer when my prior pad sprang a leak in the 100 mile wilderness. This pad only lasted until Connecticut when it developed a slow leak. I replaced it with a NeoAir XLite. The NeoAir was more comfortable (and about as easy to inflate). The construction of this pad simply seemed more shoddy compared with the NeoAir.

    • Details, please? What did you put the pad on? Were you using a tent, camping on the ground, did you protect it with a footprint in shelters? Hard to assess whether it’s a product defect or whether you abuse your gear. Thx.

  7. I have a full sized AXL. It is a comfortable pad to rest on but it is a cold pad. I find it too cold to sleep on in all but the warmest 60 plus weather. It packs super small and is light weight. Although the customer reviews at Big Agnes and REI complain of a lot of leaking pads, mine has yet to fail me.

    It has its place in my gear closet.

  8. Your listed spec on the women’s neoair (my wife has one) is wrong, it’s actually 66” long.

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