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  • 181 Air Sprung Cells are formed by a matrix of dot welds and function like individual coils in a pocket-sprung mattress for unrivalled support and comfort
  • Single-chamber design with medium resolution of Air Sprung Cells for lightweight comfort and ease of use
  • 40-denier ripstop nylon face fabric offers the right balance between weight and durability
  • Liquid-extruded thermoplastic urethane bonds permanently to shell fabric, virtually eliminating delamination
  • The Exkin Platinum non-woven layer is virtually silent and reflects back radiant heat to the sleeper
  • Thermolite insulation prevents air circulation and heat loss due to convection
  • An antimicrobial treatment is added to the TPU to prevent issues caused by warm, moist air trapped inside the mat
  • Patent-pending multifunction valve for really fast and easy inflation, deflation and fine-tuning of air pressure
  • Includes stuff sack, repair kit (containing 6 self-adhesive patches), spare silicone 1-way valve insert


View all Sea to Summit Sleeping Pads

REI membership


Best Use Backpacking
Sleeping Pad Type Air Pad
Sleeping Pad Shape Mummy
Insulation Type Synthetic
R-Value 3.3
Repair Kit Included Yes
Stuff Sack Included Yes
Packed Size
4 x 9 inches
4 x 10 inches
4 x 9 inches
Ultralight Yes
66 x 21.5 x 2 inches
78 x 25 x 2 inches
72 x 21.5 x 2 inches
14.5 ounces
1 lb. 3 oz.
15.5 ounces
Gender Unisex
Rated 5 out of 5 by from Held up very well. I purchased this for a two backpacking trek at Philmont in New Mexico. I have completed three treks in the last five years once with an acordian type pad that was too bulky on my pack and another using my Crazy Creek chair as a pad. I decided that I would try out a inflatable pad and I was very happy with this one. It inflated very well, the two way valve makes it extremely easy to inflate as well as deflate. The pad easily fit back into the carry bag and was easy to tuck down into my backpack next to my sleeping bag. I was surprised by the level of warmth the pad provided and it kept me from getting wet during a couple of heavy rains with light water coming into the tent.
Date published: 2015-07-14
Rated 5 out of 5 by from Works very well I bought this pad last year to replace an Ex-Ped mat which popped during a trip. My last trip, six nights in the backcountry of Yellowstone, was great in part due to this Sea to Summit pad. I bought the large pad. It's light,very easy to inflate and deflate and packs easily into its stuff sack. As for durability, it didn't pop! I'm a side sleeper and found that if the pad was under inflated my hip would touch the ground. However when fully inflated there were no issues. As for noise, It's not bad. Less again then the Ex-Ped. Finally, this is a great pad. It worked very well and has a permanent place in my backcountry gear. I'm now a Sea to Summit fan.
Date published: 2016-07-27
Rated 5 out of 5 by from Sea to Summit sleeping pads are the best I've never had a better nights sleep while camping. I'm 6'0, 190lbs, and a side sleeper and this pad feels amazing. I was sold on Sea to Summit pads after reading numerous reviews, but I wanted to be sure about exactly which pad would work best for me. I inflated four different options at my local REI and tested them all out in store. The comfort plus insulated and the ultralight insulated really stood out. I bought both (wife sleeps on the comfort plus most of the time, and I use the ultralight for backpacking). No regrets about the cost, worth the investment.
Date published: 2015-10-08
Rated 5 out of 5 by from The best pad for all types of weather I first tried this pad on a backpacking trip from horseshoe meadows to Mt. Whitney via Crabtree pass. We got stuck in a white out snow storm and had to set up shelter quick! 5 people jammed into a 2 man + tent since that was all the space we had on the mountain for shelter. I believe this pad out shined my tent mates pads. It was easy to take out and unfold, blew up in less than 24 breaths ( I count, it varies on and it molded easily to my designated spot in the tent. The insulation kept my core warm and dry from the frozen ground. The valves to inflate and deflate are GENIUS. It comes in at just under a pound. I wish they had a lighter pad with the same R value as I tend to get cold at night but I am perfectly happy with this pad.
Date published: 2015-09-08
Rated 5 out of 5 by from Might just sell my bed This is the kind of product that may end a lot of debates (competition) about sleeping pads, if enough people will try it out and spend the cash. There are several design features that make this pad extremely comfortable and user-friendly. The price seemed a bit high at first but I found a 20% member sale, and the size large costs about the same as a night in a hotel, and after I put 100 nights on it this season it will be a bargain. Not to mention the fact that it may come in handy at a hotel if the beds are bad. My first three pads were a NeoAir Trekker, Klymit Static V, and Big Agnes Q Core SL, and I think this is the finest, by far, in terms of comfort, warmth, and ease of use. The rolled size is just a few inches shorter than my bear can, a little bit longer than a nalgene, so it packs perfectly across the width of my pack. The folds in the pad are sharp creases that follow the design, so it is effortless to trifold this before rolling. There are several versions of this pad, but I chose this for the combination of warmth while remaining at a very low weight. The added weight of the other models seems a bit silly for "added comfort" when this thing feels amazing. The large is only 19 oz, pretty warm (haven't tried it on snow but haven't felt any ground cold after ten nights about 45 degrees), and big. I am 6'2" 230# and sleep with my arm up under my pillow and feet extended, and nothing hangs off. Twelve breaths to blow it up, and the optional air stream pump saves a little time but keeps spit out of the pad. Air Stream works great as a clothes sack. The pad has two valves (the highest-end, heaviest, red version has valves on top and bottom in case of a blowout), the inner for inflation, outer for deflation. The pad empties about 90% of its air within a few seconds of opening the outer, so you don't have to 'squeeze' deflate it once before rolling it up like many other pads. If you are thru-hiking you will appreciate how much time this pad may save you in the mornings. The inner valve has a small red tab that allows you to deflate the pad in short bursts for comfort tuning. The surface is tacky and a tad bit squeaky when skin rubs it, but normal rolling around is not loud like some others- there is no crinkling sound. The greatest feature of this pad is comfort- they really nailed it. Just a really amazing surface to relax and sleep on from any side, and there are no points where your body presses through to the ground like my hips can do on the Klymit . You can move around a lot without shifting the air in it or leaning.
Date published: 2015-05-29
Rated 5 out of 5 by from Excellent Lightweight Pad Bought this along with the Jet Stream Pump Sack. The Sleeping pad is super lightweight which is a plus for my minimalist style packing. The pad inflates and deflates very easily and has great insulation for its weight. It didn't shift around much as I moved from back to sides during sleep.
Date published: 2015-04-20
Rated 4 out of 5 by from Does the job well I like my Sea To Summit UltraLight insulated. Easy to use with the jet pack pump/bag. I'm pleased with the comfort it provides, as I don't expect memory foam comfort when camping. RECOMMEND
Date published: 2015-09-22
Rated 3 out of 5 by from Light, warm quiet, but not for me I love the idea of this pad. Let's start with the positive aspects: 1. The valve is awesome. The one-way inflation valve is one of the best designs i've seen in a sleeping pad. The high flow deflation valve is awesome and saves a ton of time when packing up camp in the morning. I almost kept this pad for the valve alone. 2. The pad is reasonably quiet. 3. The pad is really stable. You don't feel like you are sleeping on a pool toy, this feels more like a bed. 4. The pad is really comfortable when sleeping on your back. 5. The packed size/weight are awesome. Now the one drawback; When I sleep on my side (which i tend to do during the night) my hip bone tends to go right through the mat. I've noticed that people are split on this in the reviews. Some of the online reviews tend to indicate that this mat isn't appropriate for side sleepers while others say that they can turn onto their sides without sinking all the way through the mat. I have a theory; When inflated, the design of this mat allows you to easily compress one "air spring" all the way to the ground. If you spread your hand over 2 of these cells, it is much harder to compress, spread to 3 or 4 and it is nearly impossible to push through. My theory is that my hip bone is sharp enough to not spread over more than one or two cells. As a result, my hip bone connects with the ground under the pad. Pay attention to this if you lay on one of these in the store. Also try testing the pad with it less than totally firm because the air volume will change a little overnight. If I slept on my back more, i would probably keep this pad as everything else about it is really nice. Overall it is much more comfortable than the old self-inflating pad it was replacing, but the cost on the pad is high enough that I don't want to compromise. I am tempted to try the slightly heavier version that has dual layer air springs in the middle of the pad, because honestly the valve and comfort otherwise is quite fantastic.
Date published: 2015-07-02
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Does this pad come with a pump? The video showed the user pumping the pad with what looked like an Orange bag. If no pump is included, what was the pump they showed on the video?

Asked by: jmandry002
A pump is not included with the UltraLight Insulated Sleeping Pad. If you would like a pump please follow the link below to view some options;​
Answered by: REIservice
Date published: 2017-03-19

Will my EXPED pump work with this pad?

Asked by: iceaxed
It depends on the type of valve that you have on your Exped pump. If the valve on your pump is similar to the valve on the Schnozzel Pumpbag from Exped you should be able to inflate the UltraLight Insulated Sleeping Pad.
Answered by: REIservice
Date published: 2016-08-06

Does this pad make a lot of noise when you roll around on it?

Asked by: Matt
This pad makes little noise in comparison to other sleeping pads in this category.
Answered by: REIservice
Date published: 2017-03-23

How well does this insulate against cold air when using in a hammock?

Asked by: sepikmeri
This sleeping pad is a great choice for insulating against cold air while sleeping in a hammock. It has an R-value (amount of insulation) of 3.3.
Answered by: REIservice
Date published: 2017-03-23

do you ship internationaly? I live in Israel. what would be the shipping cost for a size regular?

Asked by: Idan
We can ship Sea to Summit outside of the United States. The link below will provide you with more information about international shipping rates.
Answered by: REIservice
Date published: 2017-05-05

Since this pad has insulation in it, do you need to use a pump to fill it up to avoid anything from growing inside it?

Asked by: SpikeWalker
Using a pump to prevent condensation from getting inside of the UltraLight Insulated Sleeping Pad is a good idea. The Sea to Summit Jet Stream Pump Sack is a great choice.
Answered by: REIservice
Date published: 2017-05-05

Is it practical to put this pad inside your bag, or is it meant to be underneath it?

Asked by: toddslay70
This pad is meant to lay underneath your sleeping bag.
Answered by: REIservice
Date published: 2017-02-01
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