Sea To Summit - Ether Light XT Extreme Insulated Air Sleeping Mat
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Last updated: Dec 30, 2025 Scoring
Liked most:
276
93
"It’s is SO MUCH more quiet than the s7 it ramped up the suction power from 4000 to 19000 yet I can let it clean my office room while being in a call now."
"Extremely quiet compared to our last one to the point where we can have it running while my partner is in work meetings (besides emptying water and dust bin, but that is 10 seconds of loud x 2)."
"pads that lift on carpet so you can run it while the baby naps"
299
78
"Just had my second camp out with it. 0 issues with warmth at 50F , unsurprisingly. Also at 60f I didn ’t sleep hot so that ’s nice too."
"I can take it down to like 25-30F very comfortably."
"20 degrees F comfortably from below. Quilt wasn't up to it"
6
1
"Another feature I love about the Sea to Summit is that their storage sack is also the pump sack. I’ve often forgotten to bring my Big Agnes pump sack when I’ve had my Rapide with, whereas that never happens with the S2S one."
"It uses an inflator bag and inflates easily/quickly."
"and has a bag system to inflate so you’re not hyper ventilating trying to blow the thing up at altitude."
270
92
"I just put up with the pinholes and patching them on trail because I can't sleep better on any other pad. ... There's a huge difference in comfort depending on your body between the dimpled baffling of the Etherlight/Tensor and the horizontal baffling of the Xlite. ... I can't sleep on horizontal baffling despite all the good features of the Xlite. ... I'm a side sleeper and my arms and shoulders ache and/or fall asleep or go numb on the Xlite. For whatver reason I can only sleep on dimpled baffles (tensor, etherlight)"
"I sleep all night and no body aches."
"This specific pad and its sibling, Ether Light XT Insulated, have been my primary pads the past four-ish years. ... They are 4" thick and the most comfortable pads I've used, probably tied with the NeoLoft. ... Never woken with my arm numb, and the only pad I've ever slept seven-plus hours straight-through."
18
2
"This specific pad and its sibling, Ether Light XT Insulated, have been my primary pads the past four-ish years. ... They are 4" thick and the most comfortable pads I've used, probably tied with the NeoLoft. ... Never woken with my arm numb, and the only pad I've ever slept seven-plus hours straight-through."
"Love my S to S pad also. ... Rivals my Select Comfort bed at home. ... Bought a back up in case they go out of business."
"I love the etherlight, I ’m a side sleeper and it really helps prevent my arm from falling asleep."
Disliked most:
49
78
"sounded like a loud squeaky balloon. ... Every time I shifted weight or switched sides it was loud. ... Even someone walking by looked at me and said “that’s really noisy”."
"The fan that circulates the air is so ridiculous it sounds like an airplane is idling inside my house, and it literally changes the air pressure in my kitchen and hurts my ears"
"It ’s super loud ... Noise at least on hardwood is easily double the qrevo"
45
78
"getting stressed out about the whole process of plugging in, lifting, storing the giant Kirby and not vacuuming at all in the end."
"heavy as hell"
"You do NOT want a Kirby if you have stairs - trust me."
87
30
"found it to be the equivalent warmth of the insulated static v plus my ccf, and even pairing the etherlight extreme with a ccf, and having it fully inflated wasn’t nearly enough for sleeping on frozen ground or snow."
"If I need more than 4 R insulation (I'm sleeping on snow most likely) I'm taking a ccf for backup because I don't want to die."
"I've only slept on it for one night with a Thinlight underneath, where it got down to 35F and I felt the cold under the pad for sure but it was fine. ... I would *never* use it without a Thinlight. ... not anywhere near as warm."
4
9
"had multiple get air leaks in all the seams so I gave up on using it."
"which started leaking after 3 nights"
"Avoid StS Etherlight XT at all costs, as I have had two getting pinctures where the dividers attach. ... Constant flats from just lying on them."
7
4
"I had to return the etherlite after waking up with a sore back every night."
"I found that it hurt my hips even when I let out a bunch of air (which compromised the r value even more)."
"I find horizontal baffles very uncomfortable."
Exped Dura. It has down. I have the 6R LW. You can get a slightly lighter version which is lighter due to thinner face fabrics. Avoid StS Etherlight XT at all costs, as I have had two getting pinctures where the dividers attach. Constant flats from just lying on them. And I am not the only one. This is why I bought the Exped Dura.
r/bicycletouring • Best winter sleeping pad for comfort, warmth, and durability? ->Im a side sleeper. I have the XLite. Often feels like the baffles lack structure at the sides so in the mornings I'm fidgeting around feeling like im rolling off the mat. Not used a Tensor although I have heard it offers much better support for side sleepers. Also, the Xlite suffers from mould spots on what seems the outside. For comfort though, from all the mats ive laid on, sea to summit are the most comfortable
r/Ultralight • Tensor all season vs Xlite Nxt? ->Sharing cause I grabbed one - if anyone's looking Sea to Summit is dumping old inventory and the Ether Light XT Extremes that are still available are 40% off.
r/Ultralight • Sleeping pad and R values ->When I did Baker I brought a closed cell pad (Nemo switch back) and an inflatable (Sea to summit) for comfort and redundancy. You'll be hard pressed to find a new bag that's also lightweight for $200. You'll probably need to see if you can find something used or I would recommend you see if you can rent one.
r/Mountaineering • Recommendations for Sleeping Pad & Sleeping Bag ->If it’s rare, yes. However I feel like failing welds is becoming more common with new baffle designs, and I don’t want to through the hoops of buying and then returning gear all the time, and I especially don’t need it failing on me when I’m in the middle of the woods. I wouldn’t want a tent that might not be waterproof just because it has a warranty. It’s actually worse because you could test a tent right away whereas that poorly designed sleeping pad might need a good deal of use to expose its weakness. Maybe I’m off base here, just going based off posts I’ve read while trying to upgrade my sleeping pad (ended up returning the etherlight xt extreme)
r/Ultralight • My sleeping pads never seem to last more than a few months ->Oh yeah it’s nonsense lol. I’m so confused honestly. I got it before the R value standardization made a scandal out of it. I knew it wouldn’t be as warm as its stated r value, but found it warm enough down to around 34F on its own. If I found a lighter pad with baffles like that I’d try it. Used to have a thermarest with horizontal baffles, got hip pain. Ccf pad, hip pain. Tried the new quilted air spring baffles that everyone is raving about in the form of the etherlight, still got hip pain. The etherlight I would have returned anyway though as I found it to be the equivalent warmth of the insulated static v plus my ccf, and even pairing the etherlight extreme with a ccf, and having it fully inflated wasn’t nearly enough for sleeping on frozen ground or snow. Having a hefty pad that’s neither warm nor comfortable was just unacceptable for a $180 (on sale) pad. So for now I’ll alternate between the klymit and my hammock lol
r/Ultralight • My sleeping pads never seem to last more than a few months ->I hope the etherlight works for you. I’d get it from Rei in case you need to return it. I returned mine as the extreme version wasn’t nearly warm enough to justify the price and weight. I’d have put up with that if it was super comfortable but I found that it hurt my hips even when I let out a bunch of air (which compromised the r value even more). I was really bummed about it all. Thought I’d found my holy grail pad
r/Ultralight • UL comfortable sleeping pad for side sleepers? ->Ended up getting a couple sea to summit mats on sale for $60.
r/CampingGear • Exped vs Lost Horizon sleeping mats ->Big Agnes and sea to summit checks all your boxes. Small/compact, uses vertical baffles to prevent that bouncy castle feeling and provide actual support
r/camping • Sleeping mat choice ->Rapide sl is peak. My favorite pad. Ive got a sea so summit pad that i love too but can't remember the name of it. It has like a 7 or 8 r value tho.
r/Ultralight • Question- sleeping pads ->Self-inflating foam mats seem like a good middle ground. I hadnt seen the nemo flyer. Looks very similar to the new sea to summit pursuit self-inflating that i just got (5cm thick, 600g). It's extremely comfortable and i cant wait to try it out, after getting zero sleep on my etherlight xt recently. Do you have the zlite for extra padding, or for extra warmth?
r/Ultralight • Is it worth it to invest in an inflatable sleeping pad? ->Start with a megamat duo that will fit you and your wife for family/cub camping. You can use it solo when kid gets to scouts BSA. I recently bought a sea to summit backpacking pad and a nemo foam pad to use (hypothetically while backpacking)but also while car camping solo because the megamat is ridiculous solo.
r/CampingGear • Ready to pull the trigger on a megamat ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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