NEMO - Cosmo Insulated Lite 20R
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Last updated: Dec 25, 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."
615
132
"super comfy. ... And even me at 270lbs I can sit in my side and not bottom out (inflated a lot though)"
"definitely has improved our sleep quality a lot while camping ... boyfriend has back issues so a bad sleep set up is not really an option"
"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)"
16
3
"Got these and never had a leak in 3 years now and I sleep through the night."
"I'm hard on my gear and the Helix from REI has lasted me a few years with no signs of trouble."
"2 years of full time use and abuse on our exped megamat and it's still going strong."
11
3
"I have a Nemo that’s about the size as a Nalgene bottle."
"packs small and light"
"Nemo. Lighter weight and a better R value."
7
1
"It works super well even in the winter"
"it is thick, warm, and comfy"
"it is thick, warm, and comfy"
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."
4
5
"Slippery AF. ... Like an eel slippery. ... It slid right off despite having a strap."
"The other two have a slippery surface that makes the last 1" on each side unusable since you slide off it anyway. ... the slipperiness is annoying for me since it just allows my leg to slide back down/off the pad (this is why I tried and ultimately moved away from the Nemo)."
"It is quite slippery, moreso than a Neoair. ... I often struggle to decide between putting my 1/8" foam below (protection and grip) or above (body grip). ... I think ultimately I will stick to below and put some Seam Grip on top for body/sleeping bag grip ... more slippery"
2
2
"I upgraded from an older therm-a-rest to a Nemo, it is thick, warm, and comfy but noisy!"
"It's a little "crinkly" sounding"
0
1
"But that Nemo pad was only the 20R rectangular version which was fine but I prefer wider."
Comfortable, I have one now. Before I had a Nemo pad I returned and honestly, kind of wish I had kept it. Only downside was it took forever to inflate. Also, these things go on sale/get returned all the time. I’d look for one second hand if possible.
r/CampingGear • MegaMat Duo Sleeping Mat - Medium, worth the hype? ->I use an astro non-insulated for 50-55+ nights and an older Nemo cosmo insulated for the colder stuff. It's heavy, but I sleep well on it. However I'm no longer enjoying the foot pump in it. A tensor is at the top of my list to replace it whenever I'm ready, but the astro covers most of the stuff I do.
r/CampingGear • Almost there! Narrowed down my sleeping pad search and it's between the Nemo Tensor All season and Sea to Summit Ether light XR. What would you pick? ->Thermarest neoairs are too loud and crinkly for me. Rab style of mattress doesn't do well for me as a side to belly sleeper. Nemo is my pick because the only air pads I've kept are Nemo. An astro non-insulated pad is my summer pad with an older cosmo insulated pad being my 30 to 55-deg pad.
r/CampingGear • Any strong reason to choose one over the others? ->Have you considered a camping cot? There are a lot of ultralight options now which are about the same price as a good sleeping pad for side sleepers. The only difference being is the weight, you’re looking at around 1.5kg for a cot bed which would be double the weight of a sleeping pad. For me, the extra weight is worth it for the comfort. For context I’ve tried Therm-a-Rest, Big Agnes and Nemo mats. If I’m going for comfort, the cot bed wins every time.
r/wildcampingintheuk • Best sleeping pads for side sleeping? ->My Nemo pad is more comfortable than my Purple bed 😂
r/WildernessBackpacking • How much better are “nice” sleeping pads? ->Nemo all the way!! They are luxury and pack up so small! I’ve been pregnant and camped with them and they are superb!
r/canoecamping • Need new sleeping pad for canoe trips (sidesleeper) suggestions? ->Up vote for the Nemo. Most used wedding present.
r/canoecamping • Need new sleeping pad for canoe trips (sidesleeper) suggestions? ->Just used the Nemo for the first time last weekend on the AT, slept on my side half the night and it was a night and day difference compared to my old zrest pad. So much more comfy. Held air incredibly, you can blow it up and make it very firm or leave it a little softer. Didn’t leak at all overnight. Wasn’t cold at all either but it was only in the 40s, so not a good test yet on that end. No experience with others listed
r/CampingGear • Any strong reason to choose one over the others? ->Yeah. I don't regret getting a fancy Nemo pad because it's at least light and warm, but I've still never had a good night on one.
r/WildernessBackpacking • How much better are “nice” sleeping pads? ->Nemo - I have the same pad and its great. Very comfortable, light and warm.
r/CampingGear • Almost there! Narrowed down my sleeping pad search and it's between the Nemo Tensor All season and Sea to Summit Ether light XR. What would you pick? ->I’ve had it about a year I think. I had the previous version too the insulated. Both in regular wide. Before these I had an Xlite and a S2S ultralight insulated. The Nemo is more comfortable than either for me.
r/CampingGear • Almost there! Narrowed down my sleeping pad search and it's between the Nemo Tensor All season and Sea to Summit Ether light XR. What would you pick? ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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