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4.7 21

Sea to Summit

Ultralight Insulated Sleeping Mat

From $127.90

Delivery estimate to:

Pickup from our store

92 Richmond Rd, Keswick SA Mon - Wed: 9am - 5.30pm
Thurs: 9am - 7.30pm
Fri: 9am - 5.30pm
Sat: 9am - 5pm
Sun: 12pm - 5pm
17 Doherty St, Brendale QLD Mon - Wed: 9am - 5.30pm
Thurs: 9am - 7.30pm
Fri: 9am - 5.30pm
Sat: 9am - 5pm
Sun: 9.30am - 2.30pm

The Sea To Summit Ultralight Insulated Sleeping Mat completely redefines what we perceive as a comfortable and lightweight mat for trekking and hiking.

This lightweight sleeping mat is dot weld constructed to create air filled cells that function in a similar manner to pocket spring mattresses. Confidently do away with a pump and inflate the mat with your breath, the durable rip-stop fabric is extrusion TPU laminated and has an antimicrobial treatment to resist the growth of mould.

The body conforming air cells combine with Thermolite® insulation and heat reflective silver coated Exkin® Platinum fabric in a comfortable, compact and lightweight package that may generate fits of jealousy amongst fellow lightweight hikers.

  • Insulated, air filled mattress
  • Multi-function inflate/deflate valve
  • Individually factory tested
  • Antimicrobial - OK to inflate with your breath
  • Includes stuff sack and 3M® repair kit
Snowys Code:
Supplier Code:
External Dimensions:
183L x 55W cm
Packed Dimensions:
23L x 11W x 11H cm
Mat Thickness:
5 cm
40D Ripstop Nylon
Fill Material:
Available Separately
0.48 Kg
Suggested Use:
Hiking | Trekking
Limited Lifetime
4.7 21
5 stars
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2 stars
1 star
Nov 13 2017


Coming from a foam mat it's not hard to improve the comfort level but this mat ticks all the boxes. Rolls up well, blows up in 7-8 breaths, keeps your hips off the ground even when lying on your side. Everything that was promised it delivered. Great service and fast delivery from Snowys.

- Boronia, VIC
Nov 03 2017

So comfortable

When it arrived I inflated it to try it out for comfort, & fell asleep then & there in the living room! Plus it is so light & compact. for the backpack. Love it, thanks.

- Hobart, Tasmania
Oct 09 2017


I have previously had various self inflating mats and bought this originally for a week long cycle trip as all my kids wanted to come and therefore was short one mat. It was very comfortable, warm and compact. I am a 178cm male and a regular suited me perfectly. I can’t wait to use this again. Strongly recommend this to anyone who wants a warm and light mat.

- Curtin
Oct 09 2017

Super comfy

Had a few amazing sleeps on this mattress. Squeaks a little but otherwise perfect for side sleeping. Snowy's had the lowest price of anywhere I looked, and super fast delivery!

- Sefton
Sep 18 2017

Comfortable, light and warm

Used in combination with Ember II quilt. Warm in temperatures down to 0 degrees C. Regular long enough for 178cm male.

- Peregian Beach
Sep 05 2017

Ultralight Insulated Sleeping Mat

I already have the Sea to Summit Comfort Plus Insulated... but needed to go lighter for my overnight hikes. Have used the Ultralight Insulated short, and I love this sleeping mat. I tried a new trick of placing it inside my sleeping bag, and this works a treat. This will be my favourite for a while, on those overnight hikes.
Can't wait to use it again.
I really need a comfortable night's sleep, or I don't get enough rest. This was one of my better purchases, and will be getting plenty of uses.
Totally recommend purchasing this item, if like me you're shorter than 165cm - I didn't miss any of the length of my longer pads.

- Macquarie Fields
Jul 30 2017

Awesome Sleeping Mat

We bought this product prior to a 5 day trek in Queensland ( and after many poor camping nights on a foam mat). It is FANTASTIC. Super light and small to pack, super quick to inflate with the Sea to Summit Jet Stream Pump Sack ( less than 1 minute) and even better, a comfortable nights sleep. Worth every dollar.

- Hervey Bay
Jul 26 2017

Small and comfy

Packs up so small which is awesome for hiking. Very comfortable and appears to be warm so far (camped in Jindy at -7deg c).

- Dural
Jun 20 2017

Purchased for dirtbike camping

This light weight, comfortable and small mattress is perfect for my needs. Did not notice it being noisy when rolling over etc. I think the type of sleeping bag/ bivvy must influence this

- Victoria
May 19 2017

Amazing product

I have had my eye on this mat for a while now and finally bought it as an upgrade on my cheap self-inflating one, which has lost its self-inflation capability.

It inflates in 7 big breathes and, thanks to the clever valve and deflation tab, deflates super quickly with no effort.

Most importantly, it is as comfortable as advertised and I can roll around in comfort during the night.

Super product from a great company in Sea to Summit. I can't see a need to upgrade again. This is as good as it gets for me as a hiker.

- Dover Gardens
PrevPage 1 of 3Next

Which size mat?1 answer

Hi team! I'm 166cm tall, what size mat would you recommend? Just want to be sure before I finalise my purchase. Thanks.

- Woodend (1 month ago)

G'day Michelle,

I'm about the same height and I fit on a small, which has the advantage of being lighter. But if you want to be able to really stretch out and keep all of your sleeping bag off the tent floor maybe look at a regular. 

- Snowys(1 month ago)

More Details of X-Small #21 answer

Apologies - please ignore last email, I now see details I want in drop-downs.

- Sydney NSW(4 months ago)

No trouble at all David! I hope you manage to find the perfect mat. 

- Snowys(3 months ago)

More X-Small Details1 answer

The X-Small is not listed on the STS website, but I note the length from a question previously asked. Could you also tell me the weight of this size, and also the weight of the non-insulated version, please? Thanks.

- Sydney NSW(4 months ago)

G'day David, 

The Sea to Summit Ultralight Insulated Sleeping Mat in the X Small size weighs 0.349 Kg, and the Ultralight Sleeping Mat in the X Small size weighs 0.296 Kg.

You can have a look at the specs of each mat by selecting the size from the drop-down menu - that way you'll be able to compare the whole range David.

- Snowys(3 months ago)

Dimensions1 answer

Hi, can you please provide the dimensions of the small and regular. It would be handy if all sizes were shown in the specifications.

- 3280(6 months ago)

G'day Toni,

For next time, as you select each size you're interested in (the drop-down box underneath product title), the dimension specifications will change accordingly.

For the Ultralight Insulated Sleeping Mat the dimensions for the small are 168L x 55W cm and the regular is 183L x 55W cm.

- Snowys(6 months ago)

Hi guys what size mat should I get, I'm159cms tall, thanks1 answer

Looking at the S2S ultralight mat

- Mount Eliza (7 months ago)

G'day Aneeta, 

As your 159cm tall, it looks like the small would be the best length at 168cm long. We are out of stock of this size at this time, so you could very well go for the regular size which is 183cm long which would just give you more wiggle room.

Some hikers do like to go for a size smaller than their height (3/4 length) if they really want to save on space and weight - but the drawback is that your feet can get pretty chilly. 

- Snowys(7 months ago)

What are the dimensions of the XSMALL?1 answer

Sea to Summit Ultralight Insulated Sleeping Mat XSMALL

- 3101(7 months ago)

G'day Alice, 

The external dimensions of the Ultralight Insulated Sleeping Mat in X-Small are 128L x 55W cm and the packed dimensions are 23L x 9W x 9H cm.

- Snowys(7 months ago)

Temperature range?1 answer

Hi there, Just wondering what sort of MINIMUM temperatures this mat would be suited for? Looking at getting a hiking mat mostly for use in Australia, but don't want to have to buy a new one to go to other countries (such as NZ) with. Trying to decide between this UL mat at an R value of 3.3 or the Comfort Light insulated mat with an R value of 4.2 but which is quite heavier and more expensive. Cheers

- Cairns(9 months ago)

Good question Isaac, one for which there isn't a straight forward answer.

R-value is a measure of material to resist the transfer of temperature from one side of a material (in this case a mat) to the other. These values can't be correlated to an exact temperature, and given the testing is done in a lab the results can't be directly transferred to real life scenarios.

As a general rule, for spring/summer camping an R-value of around 3 will be suitable, and for winter camping R-values of 4 and above will be better suited. I'd recommend going for the UL mat with an r-value of 3.3, this way you won't be carrying excess weight on your Aussie adventures.

Then, for colder environments add a basic closed cell foam mat such as this one (although there are cheaper ones around) to your kit and use this underneath your UL mat.

This setup is commonly used my mountaineers as the closed cell mat provides excellent insulation values for its weight and size and add's 1-2 values to the 3.3 R-value of the UL mat, bringing the total R-value up to somewhere between 4 and 5. I hope this helps with your decision.

- Snowys(9 months ago)

Weight sustained2 answers

Hello, How much weight does this one can have on top of it without popping ? Regards,

- 3150(10 months ago)

Hi Julian, Sea to Summit haven't listed a specific weight rating for these mats, but they are manufactured to the highest quality and I honestly don't think you could pop one of them if you tried, unless you take a knife to it! I'll get in touch with Sea to Summit on Monday to see if they do have a weight rating and let you know :) 

- Snowys(10 months ago)

G'day Julian, 

I've just been in contact with Sea to Summit, and they've said that the Ultralight Insulated Sleeping Mat doesn't have a weight rating, and as far as they know it would take a significant amount of weight for it to pop - so you shouldn't have that problem unless you laid down on something very sharp. 

- Snowys(10 months ago)

Cold nights1 answer

Would the thermal rating be suitable for an Australian winter maybe down to 0 +/- a few degrees? Or should I look at the comfort plus range or alternate product.

- Queenstown(1 year ago)

G'day Eric,

The Sea to Summit Ultralight Insulated Sleeping Mat is a suitable to use in Australian winters, as it will act as a buffer to stop the transference of temperature. 

If you'd like to have that little bit more cushioning, the Comfort Plus Insulated Sleeping Mat is a good option but it will be slightly heavier and bigger than the Ultralight. 

I think that as long as you choose a mat that is insulated, you should be fine in Australian winter conditions. 

- Snowys(1 year ago)

Hi folks, what are the dimensions of the large?1 answer

- TUMUT, NSW(1 year ago)
Hi Jimmy, the large mat is 198 x 64 cm.
- Snowys(1 year ago)