Sea To Summit Ether Light XR Insulated Inflatable Sleeping Pad

Product detailed description

The latest release from Australian brand Sea to Summit, the Ether Light XR, is a direct successor to the popular Ether Light XT Insulated model. And this time, the Aussies really went all out and innovated just the way we like it. Compared to its predecessor, the Ether Light XR is lighter, more packable, and offers higher thermal resistance.

Comfort

At first glance, the sleeping pad stands out primarily for its height—a respectable 10 cm. This makes it one of the most comfortable sleeping pads on the market. Even heavier individuals need not worry about it sagging under their weight. In the regular size, the mat has a standard length of 183 cm but is wider than most classic mats. It measures a generous 55 cm at the shoulders and then tapers toward the feet. Weighing 470 grams, it ranks among the lighter, insulated mats in our lineup.

The foundation of the entire mat is durable 30D/40D nylon with an Air Sprung Cells™ chamber construction, consisting of dozens of interconnected chambers that function like springs. This construction perfectly distributes your weight and adapts to the contours of your body. A major advantage is the material’s internal antibacterial treatment, which prevents mold growth inside the mat caused by inflation.

New multifunctional XPRESS valve

As with its other sleeping pads, the manufacturer uses its patented valve here as well. It works flawlessly. Just flip open the cap and you can start inflating right away. Thanks to the internal membrane, air doesn’t escape during inflation. When you want to deflate the mat, simply flip open the other plug and the air is out in a moment. The valve is really simple, and as a result, there’s nothing to break. Another advantage is that it’s flat, so it doesn’t get in the way.

Inflator Airstream™ Pumpsack

A great feature is the included inflator (55 g), which also serves as a storage bag for the mat. Here again, you can see that the manufacturer put a lot of thought into the design. Most Sea To Summit sleeping pads have been shipped with this bag since 2019. Simply snap the bag onto the valve, draw in air, and roll the pad to inflate it. It’s done after about 6 repetitions. This method easily prevents moist air from entering when inflating by mouth.

PillowLock™ pillow attachment system

The sleeping pad comes with self-adhesive Velcro patches used to secure the pillow. This easily prevents the pillow from moving, ensuring a comfortable sleep throughout the night. All pillows from Sea To Summit are compatible with this system

Thermal resistance

This sleeping pad model is labeled "Insulated," which means it features Thermolite synthetic insulation inside. This insulation is cleverly positioned "in the air," significantly reducing heat loss caused by airflow between your warm body and the cold ground. The thermal resistance value R is 4.1, making the Ether Light Insulated a sleeping pad suitable for regular three-season use. It’s also ideal for those looking to use it into mild winter conditions. Since 2020, thermal resistance measurements have been standardized according to ASTM F3340-18, allowing for comparisons of heat loss values across different brands.

We also offer a summer version without insulation: Sea To Summit Ether Light XT. 

We recommend placing Tyvek under every inflatable sleeping pad, as it significantly reduces the risk of punctures.

STS Ether Light XR Insulated:

• Lighter and more packable. 
• XPRESS multifunctional valve.
• Air Sprung Cell™ technology.
• Enhanced seam strength.
• PillowLock™ system.
• Includes Airstream™ Pumpsack.

Technical Specifications:

• Weight 470 grams.
• Thermal resistance R=4.1.
• Dimensions 183 x 55 cm.
• Packed dimensions Ø11 x 20.5 cm.
• Thickness 10 cm.
• Three-season use.

Materials:

• 30D / 40D nylon with TPU lamination + TRM reflective insulation.
• ThermalCore insulation.