Ether Light XT Insulated Air Sleeping Mat

THREE-SEASON WARMTH IN A QUIET PACKAGE

$189.95 – $239.95

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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.

$189.95
Description

The new Ether Light XT Insulated Air Sleeping Mat brings Air Sprung Cell™ comfort to the realm of thicker air sleeping mats. Quiet and lightweight, this sleeping mat uses two types of insulation to provide three-season warmth.

The XT Air-Sprung Cells™ are constructed using loops of a strong, flexible material to provide a plush sleeping experience.

The uprated 30D / 40D face fabric is quiet and durable, and the lamination technology continues Sea to Summit’s class-leading reliability.

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

Is this Air Sleeping Mat…?

  • Warm enough for shoulder seasons?  Yes. This air sleeping mat has a tested R-Value of 3.8 – perfect for conditions from Spring through Fall.

  • Easy to inflate? Yes! The supplied stuff sack features an integrated Airstream Pump – just a couple of breaths will inflate the mat.

  • Suitable for backpacking? Yes. The Tapered Regular size weighs only15 ozs / 425 g, and packs down to 4.5” x 9.5” / 11.5 x 24cm) – ideal for backpacking, bike touring and camping.

Highlights

Best Use

  • Ultralight Backpacking, Bike Touring, Camping

Comfort & Support

  • 4 inches of plush support offers luxurious comfort and you won't feel the uneven ground beneath you. 

FEATURES

  • R-Value of 3.8 is perfect for Spring-through-Fall adventures
  • At 4 inches thick, Ether Light XT Air Sprung Cells™ provides a plush sleeping experience
  • Exkin Platinum® insulation reflects your radiant heat back to you, Thermolite® insulation prevents convective heat loss
  • Lighter, quieter and durable 30D / 40D face fabric with Sea to Summit’s liquid-extruded lamination is quiet, durable and extremely reliable.
  • Patent-pending multi-function valve and supplied Airstream Pump™/stuff sack mean quick and easy inflation, deflation and adjustment.
  • PillowLock™ included preventing your Aeros™ Pillow from slipping