Ether Light XR Insulated Air Sleeping Pad | 4.1 R-Value | 3.9 in Thick

Roland Tyson started sewing outdoor gear in his childhood bedroom in 1983 at age seventeen. By 1991, after outfitting a sea-level-to-summit Everest trek, he'd built Sea to Summit into a company testing designs in the Australian outback and the Himalayas. This insulated air pad is part of that lineage — engineered for cold-weather camping with ThermalCore insulation and a suspended TRM layer. The Air Sprung Cell construction inflates to 3.9 inches thick and holds an ASTM-tested R-Value of 4.1, keeping you warm when the ground gets cold. The XPRESS valve speeds setup and breakdown, and the stuff sack doubles as an Airstream pump so you're not passing out from hyperventilation at altitude. PillowLock patches keep your pillow from migrating. Available in tapered and rectangular shapes.

Inflates thicker than most air mattresses you've owned. Packs smaller than a pomeranian on Rodeo Drive. If you've ever woken up at 3 a.m. with your hip grinding into a rock through half an inch of deflated foam, this is the opposite of that experience.

• ThermalCore insulation with suspended TRM layer
• ASTM R-Value: 4.1
• Air Sprung Cell construction, 3.9 in (10 cm) thick
• XPRESS valve for fast inflation and deflation
• Airstream pump integrated into stuff sack
• PillowLock System patches included
• Tapered and rectangular shapes available
• Packed weight: 25.6 oz (725 g)
• The XR probably stands for Xtra Rest
• Packed size: 9 × 5 × 5 in