Exped DownMat UL Winter M Regular Sleeping Mat

ASTM R-Value: 7.1 / Dimensions: 183 x 52 x 9cm / Packed Size: 23 x 11cm
Weighs 646g (excluding bag)
Code: SS18596
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Exped's Downmat UL Winter mats are rated to -33C, around expedition standard, full sized and rectangular they are an ideal choice for lightweight winter outings. Now updated with 9cm thickness for maximum warmth and comfort.

Exped says:

Ultra-high R-Value in a light and compact package for fast and light, human powered winter camping and ski touring adventures. DownMat UL Winter ships with a Schnozzel Pumpbag UL M for rapid, effortles and moisture free inflation, ensuring maximum insulation performance. Our anti-slip GripSkin coating, proven Flat Valves, and extra thick air cushion make this the ultimate winter sleeping pad.

Exped's DownMat UL Winter Sleeping Mats are insulated airbeds. Airbeds are easily the most comfortable camping mats available and its only in recent years that they have been made light enough for backpackers, airbeds with insulation go a step further and keep you warmer - this enhances the performance of your sleeping bag and in my view is well worth the extra weight, though you need to match the quality of insulation to the conditions you are likely to encounter.

If you are camping in winter conditions you will most probably be camping on snow, or even ice, in this case a sleeping mat that provides adequate insulation is absolutely essential. Exped pioneered the use of high quality down in sleeping mats but even just a few years ago these were heavy and bulky items. The DownMat UL Winter mats achieve the same levels of insulation value at a fraction of the weight and packed size, they do this by using thinner face fabrics, doing away with the integrated pump and using a single inflate/deflate valve. They retain the rectangular shape of the original mats and are now updated to 9cm thick.

Exped rates the DownMat UL Winter mats for use in temperatures down to -33C so its of expedition standard, but of course using it at higher temperatures just means that you will stay warmer.

Weight and pack size are extremely good, the DownMat UL Winter mats are 9cm thick which is an icrease on the previous 7cm and makes the mat very comfortable. It has slightly enlarged baffles along each side to help keep you centred on the mat. These mats are rectangular in shape as opposed to mummy shape, some people prefer rectangular mats because they are easier to stay on.

There's a single valve for inflation and deflation which also minimises weight. There's a Schnozzel pump bag included which is essential as using your mouth to inflate the mat will dampen the down reducing its effectiveness.

The DownMat UL Winter is a good choice if you need a rectangular mat for winter use, but don't want to carry lots of additional weight and bulk.

- Reviewed by Ultralight Outdoor Gear

Help and advice:
  • Warmth of down in ultralight construction
  • Included Schnozzel Pumpbag
  • Anti-slip GripSkin coating
  • Maximal warmth and comfort with 700 fill power goose down
  • Minimal weight and pack size
  • Convenient inflation and deflation valves
  • Stable baffle construction
  • 2 year warranty
  • Thickness: 9cm
  • Length: 183cm
  • Weight Mat: 646g
  • Weight Pump: 60g
  • Weight Packsack: 16g
  • Packed height: 23cm
  • Packed diameter: 11cm
  • Pack volume: 2.19L
  • Temperature: -33°C
  • ASTM R-Value: 7.1
  • Old R-Value test (EMPA): 7 (US), 1.23 (SI)

ASTM R-Value:

From 2020, there is a new industry standard for measuring the R-value (level of insulation) of sleeping mats – ASTM F3340-18. This new standard is the sleeping mat equivalent to the EN rating for sleeping bags.

You can now directly compare the R-value of mats rated using the ASTM F3340-18 with confidence that is a fair and accurate comparison between mats. In simple terms, the higher the R-value, the warmer the mat.

In general terms, an R-value below 2.0 is for summer use, 2.0 to 4.0 is for cooler 3 season use and 4.0+ is for winter temperatures. This will be also be dependent on your sleeping bag, how cold you sleep etc. Please contact our customer service team if you need advice on choosing the right mat for your activity.


  • Top: 20 D Polyester, TPU polyether film laminate, hydrolysis resistant, Honeycomb Gripskin coated, Oeko-Tex 100 certified
  • Bottom: 20 D Polyester, TPU polyether film laminate, Hydrolysis resistant, Oeko-Tex 100 certified
  • Insulation: 700 fill power goose down, IDFL certified, RDS (Responsible Down Standard) certified
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