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Ultralight Insulated Air Sleeping Mat

The golden child of backpacking sleeping mats

$119.95 – $159.95

Size Guide

Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. The test produces a Lower rating (for male sleepers) and a Comfort rating (for female sleepers). Both are listed in the features table on the product page.

A unisex sleeping bag with a Lower limit of 23ºF means a man should be comfortable down to air temperatures of 23ºF. The same bag will also have a Comfort limit, in the realm of 32°F, so a woman would be comfortable down to an air temperature of 32ºF. These ratings require a sleeping mat with an R-Value appropriate for expected ground temperatures – without this, the sleeping bag itself is unlikely to keep the sleeper warm enough.

A variety of factors impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag, an appropriately insulating sleeping pad and a liner as a sleep system. For example - if you plan on sleeping in nighttime air temperatures of 27ºF / -3°C, choose a bag with a gender-appropriate rating of 23°F / -5°C, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner.

$119.95
Description

If you are looking for a lightweight sleeping pad, but you will not compromise on comfort, durability, insulation or ease of use, look no further. The Air Sprung Cell™ design delivers stability and support, while our lamination and weld quality set new standards for reliability. Thermolite® and Exkin Platinum® insulation deliver performance that is tested according to the ASTM standard to give an R-Value of 3.1, perfect for late spring through early fall camping. The patented multi-function valve and pump integrated into the stuff sack mean effortless inflation and deflation.

Read about the care and use of your Sea to Summit Air Mat HERE.

Our blog post "Which Mat Should I Choose" has some helpful tips on picking the perfect air mat (or reasons why you might prefer a Self-Inflating mat).

Is the Ultralight Sleeping Mat...?

  • Really comfortable being only 2” thick? Yes. Thickness is not the key factor in an air mattress; the number of points of suspension is. Your body weight is supported by 181 individual air-filled pockets (size Regular)

  • Insulated well to protect me from the cold air and ground temps? Yes. Two types of insulation prevent radiant and convective heat loss – the mats have a tested R-Value of 3.1, and the lack of internal air movement means minimal loss of warmth compared to other designs.

  • Noisy when I shift around in my sleep? No. The reflective material (Exkin Platinum®) and the outer laminate material are both very quiet. Your tentmate will thank you in the morning.

Highlights

Weight

Regular: 16.9 oz ≈ Little more than a can of beans

Packed Size Comparison

One 1L water bottle

Performance

Late Spring to early Fall

Durability

The strongest face fabric and laminate available in a backpacking air mat. It’s a statement of tough love – we make things tough, so you will love them.

Features

  • R-Value of 3.1 – sufficient warmth for late Spring to early Fall camping. Click here to learn about the new ASTM R-Value test standard.
  • Exkin Platinum® fabric and Thermolite® insulation are combined to prevent heat loss
  • Multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure
  • 40/30D high-tensile nylon face fabric - the strongest face fabric available on an air mat
  • An anti-microbial treatment is added to the liquid extrusion TPU lamination to prevent delamination/mold issues caused by moist air trapped inside the mat.
  • Comes with a quality stuff sack which doubles as a pump, a repair kit containing six self-adhesive patches for repairing punctures in the field, and a spare silicone one-way valve insert

      Technical Features

      Single Layer Air Sprung Cells™

      Air Sprung Cells™ are the core technology used in Sea to Summit Air Mats and are the reason you will sleep more comfortably on a Sea to Summit mat than on a conventional air pad. Inspired by the hundreds of springs found in a modern pocket sprung mattress, the hundreds of small interconnected chambers (called Air Sprung Cells™) perfectly support your weight and conform to your body contours.

      The Ultra Light range has a single layer of medium resolution cells to give you the lightest and smallest packed volume mat without compromising on Sea to Summit's Air Sprung Cell comfort.

      Integrated AirStream™

      The Airstream™ Pumpsack is Sea to Summit's big volume mattress pump which we've now integrated into the stuff sack of every Air Sprung Cell™ mat. The clever design opens at one end to stow the air mat and the other end unfolds to become the built-in pump.

      The Airstream™ Pumpsack can be inflated with a single breath and takes just two or three cycles to fill our mats. Not only is it faster than inflation by mouth, but there is minimal breath condensation entering the mat and it eliminates dizziness from blowing the mat up directly by mouth.

      The Airstream™ Pumpsack is also compatible with Sea to Summit's smaller multifunction valve, which is now featured on the updated Aeros pillow range, along with the Air Seats.

      ASTM F3340-18 R-VALUE TESTING

      To ensure that you will be warm when you sleep (especially when the ground is colder), it is essential to know how well your sleeping mat resists heat loss into the ground. This resistance is known as an R-Value.

      A laboratory-tested R-value is the only way to measure resistance to heat loss. Sea to Summit has always provided independent lab-tested R-Values for its sleeping mats.

      Since January 1, 2020, we are using the new industry standard ASTM F3340-18 test to provide R-Values for our mats.

      In some mats, the new test protocol means changes to previously published R-Values. Where values do change, it doesn’t signify a drop or increase in warmth—it simply means they have been tested using a slightly different scale. The packaging may still carry the pre-2020 R-Value.

      Thermolite® HL-1

      Thermolite® HL-1 is part of the family of Thermolite® materials used in Sea to Summit sleeping bags, sleeping bag liners and sleeping mats. HL-1 high loft insulation is a fiberfill constructed with a unique 3D crimp of hollow-core and solid fibers, which provides excellent lightweight warmth with superior durability. The Thermolite insulation lofts up inside the Air Sprung Cells™ of our sleeping mats to prevent convective heat loss from your warm body to the cold ground.

      Tech Specs

      Product Details

      Best Use
      Ultralight Backpacking, Bike Touring
      Comes With
      Airstream Pumpsack / Stuff Sack and a mat repair kit
      Fabric
      30D / 40D nylon with anti-microbial liquid-extruded TPU lamination
      Insulation
      Exkin Platinum fabric and Thermolite
      R-Value
      3.1
      Season Rating
      2.5 Season
      Special
      Extrusion TPU Lamination to reduce delamination
      ultralight-insulated-air-sleeping-mat-x-small.svg ultralight-insulated-air-sleeping-mat-small.svg ultralight-insulated-air-sleeping-mat-regular.svg ultralight-insulated-air-sleeping-mat-large.svg
       
      X-SMALL
      SMALL
      REGULAR
      LARGE
      # AIR SPRUNG CELLS
      DIMENSIONS
      PACKED SIZE
      THICKNESS
      WEIGHT
      132
      50 in x 21.5 in / 128 x 55 cm
      3.5 x 9 in / 9 x 23 cm
      2 in / 5 cm
      12.3 oz / 349 g
      174
      66 in x 21.5 in / 168 x 55 cm
      4 x 9 in / 10 x 23 cm
      2 in / 5 cm
      15.1 oz / 430 g
      181
      72 in x 21.5 in / 183 x 55 cm
      4 x 9 in / 10 x 23 cm
      2 in / 5 cm
      16.9 oz / 480 g
      225
      78 in x 25 in / 198 x 64 cm
      4 x 10 in / 10 x 26 cm
      2 in / 5 cm
      21 oz / 595 g
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