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Ether Light XT Insulated Air Sleeping Mat

THREE-SEASON WARMTH IN A QUIET PACKAGE

4.7 star rating 41 Reviews

$189.95 – $239.95

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.

$189.95

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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)

Technical Features

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.

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.

Ether Light XT 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 springs of a modern pocket sprung mattress, dozens of interconnected chambers (called Air Sprung Cells™) perfectly support your weight and conform to your body contours.

The Ether Light range uses loops of TPU material to connect the top and bottom welds. This produces a thicker cell to give you a plush sleeping experience without compromising on Sea to Summit's Air Sprung Cell comfort.

Tech Specs

Product Details

Best Use
Backpacking, bike touring, paddle touring, camping
Comes With
Stuff sack with integrated Airstream™ Pump, Repair Kit, PillowLock™
Fabric
30D / 40 D nylon with anti-microbial liquid-extruded TPU lamination
R-Value
3.2
Season Rating
3 Season
Special
Extrusion TPU Lamination to reduce delamination
Thickness
4 in / 10 cm
ether-light-xt-insulated-air-sleeping-mat-regular.svg ether-light-xt-insulated-air-sleeping-mat-large.svg ether-light-xt-insulated-air-sleeping-mat-rec-reg-wide.svg ether-light-xt-insulated-air-sleeping-mat-rec-large.svg
 
REGULAR
LARGE
REC. REG WIDE
REC. LARGE
DIMENSIONS
PACKED SIZE
THICKNESS
WEIGHT
72 in x 21.5 in / 183 x 55 cm
4.5 x 9.5 in /11 x 24 cm
4 in / 10 cm
17.3 oz / 490 g
78 in x 25 in / 198 x 64 cm
4.75 x 11 in / 12 x 28 cm
4 in / 10 cm
22 oz / 625 g
72 in x 25 in / 183 x 64 cm
4.5 x 11 in / 11 x 28 cm
4 in / 10 cm
22.2 oz / 630 g
78 in x 25 in / 198 x 64 cm
4.75 x 11 in / 12 x 28 cm
4 in / 10 cm
24.3 oz / 690 g

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