BackBack

Ultralight Insulated Air Sleeping Mat

The golden child of backpacking sleeping mats

$119.95 – $149.95

Size Guide
X-SmallX-Small
SmallSmall
RegularRegular
LargeLarge

Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. Unisex sleeping bags list the Lower Limit which is the lowest temperature rating that an average male sleeper would be comfortable in. Our women’s sleeping bags list the Comfort Limit, which is the lowest temperature rating at which an average female sleeper should be comfortable. The comfort and lower limit temperature ratings are listed in the features table on the product page.

For example, a unisex sleeping bag that shows 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. Men and women should always sleep in a layer of long underwear and use 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.


Here’s a basic categorization of appropriate use, based on rated temperatures:
Summer:   >+35ºF / +3°C
3-Season:   +10 to +35ºF / -15° to 0°C
Winter:   <10ºF / -15°C


A huge variety of factors can impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag as one element in a sleep system which also includes an appropriately insulating sleeping pad and a liner. For instance - 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 nights, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner. If you have any questions about which temperature sleeping bag / R-Value sleeping mat you should select, or how to improve your warmth in a sleep system, reach out to us via our contact page any time.

$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 in the Swiss Federal Material Labs (EMPA) to give an R-Value of 3.3, 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

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 3.3, 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.

Which Air Mat should I choose?

The Ultralight offers a good level of comfort and insulation at a relatively low weight. If you would like even more comfort and three to four season performance, you may move up to the Comfort Light. Need yet more support and warmth? The Comfort Plus may be the way to go.

All Sea to Summit Air Sprung Cell mats offer unmatched durability and reliability.

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).

Features

  • R-Value of 3.3 – sufficient warmth for late Spring to early Fall camping.
  • 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.
  • The strongest face fabric and lamination available in a backpacking air mat. It’s about tough love – we build things tough, so you will love them.
  • 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.