Sea To Summit - Ether Light Series
Models:
Ether Light XT Insulated Air Sleeping Pad
Ether Light XT Insulated Air Sleeping Mat
Ether Light XT Extreme Insulated Air Sleeping Mat
Ether Light XR Insulated Air Sleeping Pad
Ether Light XR Pro Insulated Air Sleeping Pad
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Last updated: Aug 27, 2025 Scoring
Liked most:
68
14
"I gladly shelled out for my StS because I sleep like a rock on it. Eyes closed, wake up 9 hours later without any soreness."
"super comfy. ... And even me at 270lbs I can sit in my side and not bottom out (inflated a lot though)"
"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."
5
11
"It’s the first ultralight mat I’ve used that doesn’t sound like a bag of chips when I move around — no annoying crinkle from the heat-reflective foil. ... The outer fabric is also surprisingly quiet."
"I've personally found the Ether Light XT Extreme to be pretty quiet. ... Nope! I’ve used the Ether Light XT, Ether Light XT Insulated, and Ether Light XT Extreme: all three are very quiet."
"At least the XT insulated I bought last year is silent, not a even a hint of crinkling."
17
14
"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."
"Perfect. Freezing would be the coldest I'd use it. That's my cut off."
"Switched to a Ether Light XT Insulated (regular mummy, not wide), took a tiny weight penalty, slept like a baby ever since."
57
11
"I gladly shelled out for my StS because I sleep like a rock on it. Eyes closed, wake up 9 hours later without any soreness."
"super comfy. ... And even me at 270lbs I can sit in my side and not bottom out (inflated a lot though)"
"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."
9
5
"is a great all-rounder, one of the best actually when it comes to comfort-weigh-pack size ratio."
"Seems to pack even smaller than their shortest UltraLite pad (the orange one.) ... pretty packable ... still pretty small"
"packs down small"
Disliked most:
6
12
"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”."
"my husband could hardly sleep with how noisy it was ... It annoyed it me too."
"It creeks and croaks like crazy though so anyone you go with will hate you. ... And no, it doesn't go away. ... People say that but they are lying lol. I think they just got used to it."
15
14
"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."
"I had to return my Etherlight XT since it was too cold to use even in summer."
"Having a hefty pad that’s neither warm nor comfortable was just unacceptable for a $180 (on sale) pad."
0
3
"had multiple get air leaks in all the seams so I gave up on using it."
"which started leaking after 3 nights"
"Or if it's little seam weld pinholes, take advantage of the warranty (I use Sea 2 Summit pads mostly). ... but i'm not really talking about those kind of holes (that can be patched) - i mean the phantom leaks that can't be identified or fixed easily, like seam welds, valve stuff, etc. (especially on quilted/dimpled baffles) ... All my sea to summit pads have developed stress pinholes in the dimple welds, nothing to do with anything I could have done or prevented as a user, it's a common defect with that style of baffle. ... I talked to someone at Sea to Summit once who said that those type of failures are not due to external puncture/abrading but actually weaknesses that can occur when the seam welds are done that get exacerbated/worse over time. Typically they occur under the torso/arm area and are due to more contact from elbows specifically. ... sometimes (like quilted/dimpled baffles) the pads are just prone to little defects that emerge the longer the pad is used that no amount of babying can prevent. ... No matter how much you baby your sleeping pad, if it has a weak valve attachment, it's gonna develop a leak."
7
14
"Dropped about 9ozs and kicked myself the rest of the way down the trail for being so gullible. ... I could really feel those 9ozs off my back."
"Note I do have a large though because I'm over 6' tall and don't like my feet to hang off the end, it is 25.2" wide (6'6" long) but sadly much heavier at 25.4oz"
"The only downside is the bulk. ... It takes up a lot of space in my pack. ... When I I’m out for long hauls I don’t have the room for it and switch to the Tensor All-Season."
5
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)."
"even the 3” thick inflatable pad is barely tolerable."
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