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Sea to Summit Comfort Light SI Sleeping Mat
Details & Specs
A sub 1kg sleeping mat that offers 5cm of insulated comfort... I'd sleep soundly on that. The Sea to Summit Comfort Light SI Hiking Mat features Delta Core™ technology that takes the weight and
Made of lightweight 30D polyester, the Comfort Light has been created with weight and comfort at the forefront of its design and is a great choice for all-season performance.
The base features an anti-slip print to keep your mat in place when sloped campsites are unavoidable, and the multi-function valve makes inflation, deflation and
- ASTM F3340-18 R-Value: 3.1
- 5cm thickness without the extra weight
- Multi-function valve
- Anti-slip print on
base - Lightweight exterior fabric
R-Value:
3.1 | ASTM F3340−18
External Dimensions:
183L x 51W cm
Packed Dimensions:
28L x 14W x 14H cm
Weight:
0.650 Kg
Mat Thickness:
5 cm
Material:
30D TPU Laminated Polyester
Fill Material:
Delta Core™ PU Foam
Pump:
Available separately
Suggested Use:
Hiking | Trekking
Warranty:
Limited Lifetime
Supplier Code:
AMSICLR
Snowys Code:
15802
Reviews
(11)
4.5
11
(11)
Q&A's (8)
Repair kit for this mat1 answer
Hi, I bought these for my kids and recently discovered a 10cm gash in one of them! I don't think it came with a repair kit as I can't locate it for the two mats I bought. What repair kit would you recommend? Also I think the gash is longer than most repair kits, so could I put 2 patches on the one gash? Thanks
Bella - Melbourne, VIC(2 years ago)
G'day Bella,
There is 100% hope! I once had a customer repair a tear in their self inflating Exped that was a foot long.
The best thing for it is Gear Aid Seam Grip, it's a versatile little tube of goodness for a range of different issues.
You can either use patches, or just pick up some similar Nylon material from a fabric shop (spotlight even have ripstop), and liberally patch it using the Seam Sealer.
If you were wanting to try and hit it with a few patches, you could go with the Sea to Summit mat repair kit.
Hope that helps.
Lauren - Snowys(2 years ago)
Side sleeper help with this mat1 answer
Hi, I love this mat but I'm trying to figure out how to get more comfy with it as side sleeper, sometimes I get hip soreness during the night using it camping. Any suggestions? Would a cheap foam underlay help?
Arun - Sydney, NSW(3 years ago)
G'day Arun, We have mixed reviews on this one for side sleepers, some people have no problems, and some people find it a bit less comfortable.
If you fall into the latter side of the fence, consider adding the Exped FlexMat or the Thermarest Z Lite to your kit. Will add a bit of extra padding and has flexibility to be used folded as a sitting pad, etc
They're quite light and can be strapped to the outside of your pack without to many issues.
Lauren - Snowys(3 years ago)
Comparison1 answer
What is the difference between this mat and the Sea to Summit Ultralight insulated mat? They seem to have similar R value and weights.
Mitchell - Toowong, QLD(3 years ago)
G'day Mitchell,
The SI stands for Self Inflating, so the Comfort Light is a self inflating mat filled with foam. The Ultralight insulated is an inflatable mat, because of this it is lighter and packs abit smaller than the comfort Light SI.
Lauren - Snowys(3 years ago)
Is this mat noisy?1 answer
Trying to pick a few good mats that are not noisy but also small, and light weight. Is this mat noisy? Want to rule that factor out too! I'm a light sleeper and I've got kids that toss and turn 🤣
Bek - Holder, ACT (4 years ago)
G'day Bek,
All mats have the potential to be noisy, depending on the kind of bedding you use and mattress materials.
Self Inflating options are better if you need something quiet, as they are foam filled which deadens or absorbs any noise.
It's also recommended to have some kind of fitted sheet over the mattress aswell, but that's not neccessary if your sleeping bag materials aren't soft/quiet.
You shouldn't have any trouble with these mats.
Lauren - Snowys(4 years ago)
Another "which mat for me?" question1 answer
Thinking of upgrading my current hiking mat to get a better nights sleep due to my hip and shoulders being on the ground. I'm 173cm tall, weigh 78 kg and a bit of a side sleeper. In order my mat priorities are: comfort, robustness, price then pack size. Trying to decide between the StS Comfort Light SI and the Therarest Prolite Plus. Reviewing your site (which is the best by the way), I think the StS will have it on comfort (5 mm thick) and price, but will lose out to the Thermarest on quality of materials and robustness. I think the Thermarest will have it on robustness, especially on valve reliability and materials, but it is behind the StS on price and foam thickness. At 3.8 mm its not much better than my current mat with its 3 mm of thickness. Interestingly, the Thermarest has a higher R value than the StS, although its not as thick. I don't know if this makes it more comfortable than its 3.8 mm of foam might indicate. I'm sure they are great mats, but as a motorcycle camper, which mat do you think is more suited for me?
Brett - Franklin(6 years ago)
G'day Brett,
Thanks for getting in touch, we do get a lot of this type of question so luckily we're prepared! If your first priority is comfort, then I would say the Comfort Light SI is going to ticket that box, with it's 5cm of thickness, over the 3.8cm of the Prolite Plus. In terms of Robustness, the Prolite Plus is a little more robust with 50Denier fabric, versus 30Denier on the Comfort Light however, the valve system is possibly slightly less robust. In terms of R-value, the design of the cores that are cut out of the foam on the Comfort Light SI leads to a lower weight, smaller packed size, but also a slightly lower R-value, when compared to other mats of 5cm thickness. A better direct comparison for the Prolite Plus would be the Camp Mat SI which has slightly more robust fabrics that the Prolite Plus, and a slightly higher R-value. Overall you probably won't find that the R-value is going to influence you much in Australia unless you plan to snow camp, so removing that from the equation, you listed your first priority as comfort, so I would recommend the Comfort Light SI for that reason. You'll likely find the Thermarest isn't really much of an upgrade from your current 3cm thickness.
Leece - Snowys(6 years ago)
Best mat for me!1 answer
Thank for your reply re the kids mat, that’s really helpful. Yes I am also looking for a lightweight mat for me as currently I just have the Zempire megamat - too big for hiking. I did consider the Comfort plus S1, but am a little concerned about the weight/pack size, so started looking at the S2S air filled ones for me. It’s a bit overwhelming though trying to compare them all! I’m wondering about the Ultra Light Insulated Wmn’s. The Ether light XT insulated - womens looks better and really comfy, but just a bit too expensive. I also considered the Comfort Plus Insulated Sleeping Mat, and Comfort light - insulated, but didnt’ like the idea of the noise mentioned in the reviews. I’m wondering how comfy the Ultra Light Insulated Wmn’s is, and if it sounds like a good compromise between comfort, size, R and price and if you think it’s best for me? Thanks for your advice!
Bella - Melbourne(6 years ago)
G'day Bella,
Not a worry, happy to help. I'd say for you, either go for the Comfort Light SI with the 5cm thickness or go for one of the dual-layer air-filled insulated mats. The Ultralight Insulated Women's mat is a good choice, but it is only a single layer design, so if you did happen to have an accidental overnight puncture, you'll wake up on the ground. The Comfort Light Insulated Women's mat is a pretty good choice, as it has plenty of depth, as well as a dual-layer between the shoulder and hip. I've recently upgraded to this model, and I think it's pretty ace. Having a fall back layer in case of puncture is a handy feature. In terms of the noise - I can't I personally notice it, because I'm asleep, however, if you're a really light sleeper, or are likely to be walking with a light sleeper then maybe the Ether Light XT Insulated (if you can afford it), or the Comfort Light SI might be the best option.
Leece - Snowys(6 years ago)
Best mat for kids1 answer
Hi, I'm looking for a mat for my 5 and 7 year old that would work for school camps as well as hiking. When hiking I will likely end up carrying most of the equipment, so I want small lightweight mats. But I'm a bit scared to get them an air filled one in case they jump on them and pop them! So I'm considering the S2S Comfort Light SI and Camp mat SI. I've looked at the specs and noted the different R ratings, thickness etc but just can't decide what would be camp is just too heavy. I also considered the Comfort Plus SI and it looks super comfy, but heavier so maybe not as good for us given how much stuff I'll be carrying. Can you please share your thoughts on this, and/or recommend best mats that are durable yet light weight, comfy and affordable for kids?
Bella - Melbourne(6 years ago)
G'day Bella,
You're on the right track there with the Comfort Light SI - we think it's a great option and provides a good level of comfort, for a fairly decent packed size and weight. We find that some people tend to also look at the Ultra Light SI Hiking mat for kids, as they're a bit lighter and smaller, and kids at that age generally won't notice the difference between 2.5cm and 5cm! In terms of the R-values, as long as you're not snow camping the 2.7/2.6 should suit most Australian conditions and not cause any issues for you. I'd probably rule out the Comfort Plus SI for the kids, but it might be a nice option for you depending on if you've got a mat or not? Another good way to save some size and weight is to opt for the small mat for the kids, as they will likely be able to use a shorter mat well into their teen years, and possibly adulthood (depending on genetics etc). The Thermarest Prolite Sleeping mat also sits nicely alongside these but will set you back a little more $$.
Leece - Snowys(6 years ago)
Which way to go???1 answer
Hi guys, I have a cheaper, heavier SI sleeping mat (should've researched earlier) for a 6 to 8 week hike/trek around QLD, now tossing up between Sea to Summit Comfort Light Insulated and their Comfort Light SI Sleeping Mat... I know that you get what you pay for and really I'd value your opinion on the best way to go??? Cheers Mark
Mark - Barcaldine(9 years ago)
G'day Mark.
Big question. Both the Sea to Summit Comfort Light Insulated and the Sea to Summit Comfort Light SI Sleeping Mat are fantastic options. In comparison, it's hard to pass up the Sea to Summit Comfort Light Insulated as it is a lighter, thicker, higher R-Value and smaller packed mat. I personally also think the air-cell mats are much comfier as they distribute body weight much more evenly. The catch with these mats though is that you need to inflate the mat yourself either with your breath or with the use of a pump available here or here. The downside is that being an air-cell mat, they can also be a touch noisy as you move on them. As a result, the upside then of the self-inflating mat is that they inflate themselves and are much quieter because of the Delta-Core foam.
Ben - Snowys(9 years ago)
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