Sea To Summit - UltraLight Insulated Mat
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Last updated: Dec 15, 2025 Scoring
Liked most:
177
87
"I sleep all night and no body aches."
"I side sleep and roll around all night and don’t hit the ground with my hips. ... I am 6’4” and was weighing 250 for most of my use of that mat. Hence why I don’t mind an extra pound for a comfortable sleep at night. I am weighing 220 now and don’t touch the ground at all with the mat partially deflated."
"I'm a side sleeper and these things are an absolute godsend. Once they're in, I don't feel a thing."
208
57
"I can take it down to like 25-30F very comfortably."
"Pads like the Xtherm (with good convective heat loss mechanisms) outperform pads like the Tensor XC (minimal convectove eat loss mechanisms) even though the Tensor XC has a higher tested rvalue. ... Stevens testing reinforces what I have also been seeing in the field while testing dozens of pads in every temperature possible. ... The other issue is that companies are designing to max the ASTM standard and "taking advantage of" the hole in the standard in order to push really high r-values that don't hold up when you're all of a sudden in air temps of -40."
"I slept on a simple switchback in 7°F weather last month on Hagerman Pass in Colorado... It was warm enough."
186
19
"fits in the overhead of an airbus A321 for Delta or American Airlines (flown with both, put it in the overhead with both)"
"Fits in the overhead bin - we’ve always used the branded backpack."
"They are all great cameras and the x2 is the least bulky of the three. ... Plus its way lighter and less noticeable when wearing. ... X2 and 3 are way lighter on the selfie stick so they're actually easier to ride with. ... That's one of the reasons I still use my X2 so often is it feels honestly half the weight of the X4."
159
33
"Never had a blister, no support issues and most of the time I forget to cinch the laces right at the trail head and I don't even notice. ... Incredibly comfortable, right out of the box."
"Foot-shaped toe box ... super roomy ... Great for comfort and natural splay"
"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."
41
15
"reliable ... I’ve been using the same inflatable pad for 6 or 7 years now and I’ve never had an issue with punctures or leaks"
"used a double wide exped for numerous years with zero issue."
"I've used it for about 80 days over several trips. It's a very robust build."
Disliked most:
57
69
"Both times I’ve hiked the PCT my thermarests have popped in the desert . ... My first one had multiple holes and was a write-off."
"Inflatables take a lot of babying, they often get holes. ... If a pad pops once every 10 weeks, you’ll have to replace the pad at least twice on a thruhike. Of course, some pads don’t pop, it’s just that they often do pop or leak at some point. I don’t want to spend 100-200 dollars on something that’s gonna fail after a couple weeks. ... “ often they do pop or leak at some point” meaning most pads will pop eventually. Once it pops or leaks, even if it’s once, the pad has failed and it doesn’t effectively function unless repaired or replaced. ... Based on anecdotal personal evidence, which of course isn’t a great measure, a lot of pads pop or leak without making it through a full thruhike. One failure is too many for me. There’s no other piece of gear, besides socks and shoes, that fail as often as pads. ... I’ve had one fail in as little as 2 days and I currently have one that has yet to fail after like 70 nights🤷♂️."
"leaked out the valve all through Washington, leaving me on the ground multiple times per night, waking me up every hour or so."
3
6
"My new fucking Sea to Summit Ultralite decided holding air is not its thing despite very careful handling and making sure it wasn't left inflated during the day."
"the "self-inflate" part is a lie ... Well I haven't and it doesn't. It just sits there."
"Sea to Summit ultralight pad had nothing but punctures (or material defects) for me over the years."
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40
"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"
"The biggest issue is the noise it makes, I move a lot from side to back and vice versa during the night. The noise sounds like balloons rubbing against each other. I've tried wrapping it in a blanket, which helps a bit but still makes a lot of noice."
"Very very loud"
3
1
"The second problem is that, even when the pad is fully inflated, my hip bones still slightly touch the ground which is uncomfortable and make me change position even more often."
4
1
"I’ve used a S2S Ultralight Insulated for years and it’s done a pretty good job but the mummy shape is not ideal for how I like to sleep. I always end up with a leg off (and freezing) or struggling to find a comfy position."
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? ->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 ->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 ->StS Ultralight Insulated. Anything packable with R value about 3 should be OK.
r/bikepacking • Recommendations for sleeping pad ->I personally think Sea to Summit pads are comfortable. Nemo Tensor might interest you as well.
r/hiking • Most comfortable sleeping pad? ->Same. I have a Sea to Summit Ultralight and I sleep so well on it… 2” thick, weight is 15 oz, R-value 3.1
r/motocamping • Sleeping pad comparison for motocamping and why air pads are optimal ->I was like OP and had the Klymit but then switched to the Sea to Summit ultralight insulated pad (oval shape) a year ago and it’s been amazing. I used my Klymit again last month on a father-son trip and the difference in comfort is noticeable.
r/WildernessBackpacking • How much better are “nice” sleeping pads? ->I'm using sea to summit ultralight insulated pad since many years. Weight and volume are critical for me. Works better than an underquilt for me.
r/Hammocks • Any good hammock, sleeping pads like the Klymit hammock V. ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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