The Comfort Light Self-Inflating Sleeping Mat is a lightweight, backpacking option that offers superb comfort at a low weight and in a small packed size. The Delta Core technology removes 40% of bulk and weight without compromising on comfort. The multi-function valve flips over to allow fast deflation without fighting re-inflation as you go. This pad is a real alternative to air pads for many backpackers and campers who like to sleep comfortably. 3.1 R-Value is sufficient for late spring to early fall use. Two inch thick foam offers superb comfort and protects against being able to feel uneven terrain. Delta Coring removes over 40% of the foam to reduce weight and bulk without compromising durability. Woven 30D polyester face fabric has been chosen for its light weight and strength. Silicone print prevents your sleeping bag from slipping on the pad, and the pad from slipping on the tent floor. Flip-over multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping.
The Comfort Light Self-Inflating Sleeping Mat is a lightweight, backpacking option that offers superb comfort at a low weight and in a small packed size. The Delta Core technology removes 40% of bulk and weight without compromising on comfort. The multi-function valve flips over to allow fast deflation without fighting re-inflation as you go. This pad is a real alternative to air pads for many backpackers and campers who like to sleep comfortably. 3.1 R-Value is sufficient for late spring to early fall use. Two inch thick foam offers superb comfort and protects against being able to feel uneven terrain. Delta Coring removes over 40% of the foam to reduce weight and bulk without compromising durability. Woven 30D polyester face fabric has been chosen for its light weight and strength. Silicone print prevents your sleeping bag from slipping on the pad, and the pad from slipping on the tent floor. Flip-over multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping.
The Comfort Light Self-Inflating Sleeping Mat is a lightweight, backpacking option that offers superb comfort at a low weight and in a small packed size. The Delta Core technology removes 40% of bulk and weight without compromising on comfort. The multi-function valve flips over to allow fast deflation without fighting re-inflation as you go. This pad is a real alternative to air pads for many backpackers and campers who like to sleep comfortably. 3.1 R-Value is sufficient for late spring to early fall use. Two inch thick foam offers superb comfort and protects against being able to feel uneven terrain. Delta Coring removes over 40% of the foam to reduce weight and bulk without compromising durability. Woven 30D polyester face fabric has been chosen for its light weight and strength. Silicone print prevents your sleeping bag from slipping on the pad, and the pad from slipping on the tent floor. Flip-over multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping.
The Comfort Light Self-Inflating Sleeping Mat is a lightweight, backpacking option that offers superb comfort at a low weight and in a small packed size. The Delta Core technology removes 40% of bulk and weight without compromising on comfort. The multi-function valve flips over to allow fast deflation without fighting re-inflation as you go. This pad is a real alternative to air pads for many backpackers and campers who like to sleep comfortably. 3.1 R-Value is sufficient for late spring to early fall use. Two inch thick foam offers superb comfort and protects against being able to feel uneven terrain. Delta Coring removes over 40% of the foam to reduce weight and bulk without compromising durability. Woven 30D polyester face fabric has been chosen for its light weight and strength. Silicone print prevents your sleeping bag from slipping on the pad, and the pad from slipping on the tent floor. Flip-over multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping.
Last updated at 06/08/2026 18:40:56
Sea to Summit Comfort Light Self Inflating Sleeping Mat (Regular)
Free delivery between 12–16 June
Comfort Light SI Mat Reg
Free delivery
Latestbuy Comfort Light SI Mat - Regular
originally posted on REI
I bought this pad over a year ago, and have had it out on the trail and camping for over 20 nights. It was definitely an upgrade from the Z-Lite Sol that I had before, I can't believe anyone uses those, even if you're trying to ultralite. This pad is worth its weight for the comfort it provides.This pad is incredibly comfortable, I am a side and back sleeper. I've used it on cold nights, but honestly can't speak to how well this pad insulates as I can't compare it to many others.I've never quite understood the self-inflation functionality, I don't know how much success I've had getting it to do that. I always end up blowing into it several times anyway to get it fully inflated (that doesn't bother me.)Feels sturdy, construction is good, no complaints on that ... MoreI bought this pad over a year ago, and have had it out on the trail and camping for over 20 nights. It was definitely an upgrade from the Z-Lite Sol that I had before, I can't believe anyone uses those, even if you're trying to ultralite. This pad is worth its weight for the comfort it provides.This pad is incredibly comfortable, I am a side and back sleeper. I've used it on cold nights, but honestly can't speak to how well this pad insulates as I can't compare it to many others.I've never quite understood the self-inflation functionality, I don't know how much success I've had getting it to do that. I always end up blowing into it several times anyway to get it fully inflated (that doesn't bother me.)Feels sturdy, construction is good, no complaints on that front. As others have noted this thing can be challenging to get back in the stuff sack. Wholeheartedly agree, it's a tight squeeze for sure. You'll have to fold it and squeeze the life out of the thing in order to fit it in the bag. I got used to it!
originally posted on seatosummitusa.com
Used this pad camping in snow, on a night that got down to 24 degrees F. I'm primarily a side sleeper, and was pretty comfortable. Although the air was very cold, I never felt cold seeping up from the ground. The multi-function valve works well.This pad isn't the lightest, thickest, most insulating, most compact, or largest pad - but it's an excellent set of compromises on all fronts. That said, I'm docking a star for the "self-inflating" description. I followed the instructions, leaving the pad fully inflated for a day prior to packing out, and I still needed to do most of the work putting the air in. Maybe this will improve as the pad gets used more, but I was disappointed.
originally posted on REI
I bought one of these in 2020, looking to replace the cheap inflatable pad that most people have bought when they first started. This pad was everything I wanted. My girlfriend loved it so much, I bought one more just so I could drag her out for more trips! I toss and turn all night and never wake up my partner because there is no crinkly insulation like you find in many other pads. I'm not an ultralight guy so the size and weight are well worth the quality of sleep I get. The downside to this pad is definitely the self-inflating concept. I have yet to see this pad inflate to even 50% of what I'd expect. This isn't a huge issue because it only takes a few breaths to blow it all the way up. Time will tell how this pad handles that type of moisture from breathing into it.
| Brand Colour | Green - Green |
| Best Uses | Camping | Hiking | Backpacking |
| Construction | Delta Core foam technology |
| Shape | Tapered mummy |
| R-Value | 2.7 |
Sea to Summit Comfort Light Self Inflating Sleeping Mat (Regular)
Free delivery between 12–16 June
Comfort Light SI Mat Reg
Free delivery
Latestbuy Comfort Light SI Mat - Regular
I bought this pad over a year ago, and have had it out on the trail and camping for over 20 nights. It was definitely an upgrade from the Z-Lite Sol that I had before, I can't believe anyone uses those, even if you're trying to ultralite. This pad is worth its weight for the comfort it provides.This pad is incredibly comfortable, I am a side and back sleeper. I've used it on cold nights, but honestly can't speak to how well this pad insulates as I can't compare it to many others.I've never quite understood the self-inflation functionality, I don't know how much success I've had getting it to do that. I always end up blowing into it several times anyway to get it fully inflated (that doesn't bother me.)Feels sturdy, construction is good, no complaints on that ... MoreI bought this pad over a year ago, and have had it out on the trail and camping for over 20 nights. It was definitely an upgrade from the Z-Lite Sol that I had before, I can't believe anyone uses those, even if you're trying to ultralite. This pad is worth its weight for the comfort it provides.This pad is incredibly comfortable, I am a side and back sleeper. I've used it on cold nights, but honestly can't speak to how well this pad insulates as I can't compare it to many others.I've never quite understood the self-inflation functionality, I don't know how much success I've had getting it to do that. I always end up blowing into it several times anyway to get it fully inflated (that doesn't bother me.)Feels sturdy, construction is good, no complaints on that front. As others have noted this thing can be challenging to get back in the stuff sack. Wholeheartedly agree, it's a tight squeeze for sure. You'll have to fold it and squeeze the life out of the thing in order to fit it in the bag. I got used to it!
Used this pad camping in snow, on a night that got down to 24 degrees F. I'm primarily a side sleeper, and was pretty comfortable. Although the air was very cold, I never felt cold seeping up from the ground. The multi-function valve works well.This pad isn't the lightest, thickest, most insulating, most compact, or largest pad - but it's an excellent set of compromises on all fronts. That said, I'm docking a star for the "self-inflating" description. I followed the instructions, leaving the pad fully inflated for a day prior to packing out, and I still needed to do most of the work putting the air in. Maybe this will improve as the pad gets used more, but I was disappointed.
I bought one of these in 2020, looking to replace the cheap inflatable pad that most people have bought when they first started. This pad was everything I wanted. My girlfriend loved it so much, I bought one more just so I could drag her out for more trips! I toss and turn all night and never wake up my partner because there is no crinkly insulation like you find in many other pads. I'm not an ultralight guy so the size and weight are well worth the quality of sleep I get. The downside to this pad is definitely the self-inflating concept. I have yet to see this pad inflate to even 50% of what I'd expect. This isn't a huge issue because it only takes a few breaths to blow it all the way up. Time will tell how this pad handles that type of moisture from breathing into it.
My beloved Comfort Light SI sleeping pad suddenly sprang three irrepairable leaks after at least 160 nights of use (one leak is at the margin of the valve, two are in the edge/seam of the mattress near the valve). That's a good run compared to other pads I have used (comparable to the original Thermarest, better than the ultralight Thermarest, far superior to the Big Agness air mattress I enjoyed for less than a week). Based on a friend's experience, I expect Sea To Summit to replace the pad under their lifetime warranty. I never had a leak prior to these. I find the 2" thickness very comfortable and warm (I've used it in temperatures down to about 15 degrees F). The material is very quiet. The reversible one-way valve is genius. This isn't the lightest pad, but I ... MoreMy beloved Comfort Light SI sleeping pad suddenly sprang three irrepairable leaks after at least 160 nights of use (one leak is at the margin of the valve, two are in the edge/seam of the mattress near the valve). That's a good run compared to other pads I have used (comparable to the original Thermarest, better than the ultralight Thermarest, far superior to the Big Agness air mattress I enjoyed for less than a week). Based on a friend's experience, I expect Sea To Summit to replace the pad under their lifetime warranty. I never had a leak prior to these. I find the 2" thickness very comfortable and warm (I've used it in temperatures down to about 15 degrees F). The material is very quiet. The reversible one-way valve is genius. This isn't the lightest pad, but I find the reliability and comfort worth it even for backpacking (I used it mostly for sea kayaking).
Bought this as a lightweight option SI mat for the kids (4&7yo) to replace their Roman tornados as we plan to start some overnight hiking in addition to our car camping.Now have two of these mats and they are perfect for the kids. Good size and I'm confident in their durability and that these mats will last for many years as the kids grow. I didn't want to go full out on an inflatable mat as my kids are rough with their gear. Not the lightest weight option available, but for the price and quality, I'll just do a few extra squats at the gym.I did open up the mat when I first got it to let the foam expand, then pumped some air into it.The one way deflate valve is genius. It took me a couple of attempts to get the mat back into the bag, but once I learnt how to ... MoreBought this as a lightweight option SI mat for the kids (4&7yo) to replace their Roman tornados as we plan to start some overnight hiking in addition to our car camping.Now have two of these mats and they are perfect for the kids. Good size and I'm confident in their durability and that these mats will last for many years as the kids grow. I didn't want to go full out on an inflatable mat as my kids are rough with their gear. Not the lightest weight option available, but for the price and quality, I'll just do a few extra squats at the gym.I did open up the mat when I first got it to let the foam expand, then pumped some air into it.The one way deflate valve is genius. It took me a couple of attempts to get the mat back into the bag, but once I learnt how to roll it (tight), it was quite simple. However, I store these lightly rolled / folded in the garage when home.For adults - I tried the mat and I'm a side sleeper. Felt good and my hip didn't touch the ground. The width of this mat is narrower than my usual mat which is the the Sea to Summit Comfort Plus Insulated Sleeping Mat (Small).Factoid: the stuff sack pump from my comfort plus fits into this mat and also the S2S Aeros pillow.
This is a great pad for people getting into backpacking but also wanting something they can use for car camping as well and aren't ready to commit to a fully inflatable pad. Its durable, comfortable and intuitive to inflate, self inflating feature is nice since you only need a few breaths to inflate fully after it's done it's thingMy only issues are that it is on the heavier side (all self inflating pads are heavier than purely inflatable pads because of the foam) and its difficult, but not impossible, to roll it up tight enough to fit it back into the included stuff sack when breaking camp.
Took the mat on a 7 day trip. It worked as I expected for 2 nights. The next 5 nights it deflated. I even tried refilling. That did not get me through the night. When I contacted Sea to Summit, they said there was nothing they could do because I bought it at their warehouse sale in Boulder Colorado. I believe I was the first and only owner. It was not marked as a second or flawed. When Sea to Summit sells directly to a customer the should stand behind their products.
I actually bought two of these mats, this one for my husband and the smaller female specific version. Though we haven't yet used these mats on a backpacking trip, so far I love everything about them. They are definitely a cushy upgrade from our Klymit mats that we have been using for years.Of course they are considerably larger but sleeping comfort is now allowed more space in my backpack now I'm advancing in years :DThey actually do self-inflate but may need an additional breath or two to plump them right up. They also have a one-way valve for inflation AND for deflation for fine tuning the firmness while you're actually lying on it. They have grippy spots on them so they don't slide around in your tent and your sleeping bag doesn't slide around on top of them ... MoreI actually bought two of these mats, this one for my husband and the smaller female specific version. Though we haven't yet used these mats on a backpacking trip, so far I love everything about them. They are definitely a cushy upgrade from our Klymit mats that we have been using for years.Of course they are considerably larger but sleeping comfort is now allowed more space in my backpack now I'm advancing in years :DThey actually do self-inflate but may need an additional breath or two to plump them right up. They also have a one-way valve for inflation AND for deflation for fine tuning the firmness while you're actually lying on it. They have grippy spots on them so they don't slide around in your tent and your sleeping bag doesn't slide around on top of them (though those are not yet tested in the field). We inflated them right up and lounged around on them in our living room for a bit and both agreed that they're probably going to be more comfortable than what we had. Pretty good price point too. We'll test them out and I'll report back!
I hate to be the "gram counter" but as others have noted, the Large is not a 28 oz pad, but a 34.5 oz pad—significantly heavier than advertised and over two pounds. For the weight it just doesn't feel as comfy, stable, or luxurious as the Comfort Plus SI. If you're going to splurge on comfort, you might as well step up to the Comfort Plus SI (~43 oz). Or if weight is more important, go with an Ether Light XT/Air (23 oz / 18 oz respectively). The Comfort Light SE kind of fits between these two tiers in weight. Although I'd go for the thicker Ether Light if you're a side sleeper, even though it's an air pad rather than an air & foam hybrid, just because you'll be bottoming out in this pad, since it's just 2", regardless of its materials.
One of the most comfortable pads I've slept on. Pretty good weight to comfort ratio too.That said, it's listed here at 1lb 5oz, but right on the package it says 22.9 oz (1lb 6.9oz), and that's the pad only: I don't entirely trust the fabric to resist punctures - it's pretty lightweight - so I'll be carrying the included patch kit; add another couple oz. Then there's the stuff sack, which is important for the same reason as the patch kit, so throw another ounce on the scale. Suddenly I'm over 1lb 10oz. I bought this to try to lighten up from my 25 yr old Thermarest, which weighs in its stuff sack 1lb 12oz and is bombproof enough for me to never bother carrying a patch kit, so I'm pretty disappointed. I think some truth in advertising would be nice here.And that ... MoreOne of the most comfortable pads I've slept on. Pretty good weight to comfort ratio too.That said, it's listed here at 1lb 5oz, but right on the package it says 22.9 oz (1lb 6.9oz), and that's the pad only: I don't entirely trust the fabric to resist punctures - it's pretty lightweight - so I'll be carrying the included patch kit; add another couple oz. Then there's the stuff sack, which is important for the same reason as the patch kit, so throw another ounce on the scale. Suddenly I'm over 1lb 10oz. I bought this to try to lighten up from my 25 yr old Thermarest, which weighs in its stuff sack 1lb 12oz and is bombproof enough for me to never bother carrying a patch kit, so I'm pretty disappointed. I think some truth in advertising would be nice here.And that said, I'll probably keep it just because it's so amazingly comfortable, and carry some tenacious tape instead of the Sea to Summit patch kit with its tube of silicone.Last, the valve is very clever and easy to use, but does not inspire confidence for durability and longevity. I'm hoping I'm wrong on this one; time will tell.Four stars strictly for comfort and ease of use, and a nod to the fact that even with the added weight, it's really light for what it delivers.
| Brand Colour | Green - Green |
| Best Uses | Camping | Hiking | Backpacking |
| Construction | Delta Core foam technology |
| Shape | Tapered mummy |
| R-Value | 2.7 |
