Ultralight Mat

More comfort, minimal weight

$89.95 – $119.95

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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.

$89.95

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Description

The Ultralight Air Mat was awarded Gear of the Year by National Geographic Adventure and earned Best New Gear from Gear Institute in 2014 and there is little wonder why. This is the durable, compact, lightweight sleeping mat for gram counters who don't want to sacrifice comfort for weight. Using Air Sprung Cell™ technology with a single layer of medium resolution cells, this offers a minimal packed size and weight. Ideal for adventure racers, lightweight backpack or bikepacking adventures or anyone looking for Ultralight comfort.

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

Highlights

Weight

Regular: 13.9 oz ≈ Lighter than a roll of paper towels

Packed Size Comparison

Burrito with double meat and guac.

Performance

Summer Mat: Perfect for any summer adventure not at altitude.

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 0.7
  • Multi-function valve for fast and easy inflation, deflation and fine tuning of air pressure.
  • Liquid extrusion TPU lamination bonds to the mat face fabric more consistently than a film, virtually eliminating delamination issues common in other mats
  • An anti-microbial treatment is added to the TPU to prevent issues caused by warm, 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.