An evolution of the renowned Ether Light mats has arrived&n... An evolution of the renowned Ether Light mats has arrived with the XR Pro. Staying true to their comfort, durability, the XR Pro boasts ThermalCore technology which increases insulation value while keeping weight and packed volume minimal. Air Sprung Cell construction provides 10cm of plush comfort wherever you sleep. Inflation and deflation are a breeze with the XPRESS valve and Airstream pump built into the stuff sack. With double the weld strength of previous models the XR Pro is perfect for alpine adventurers to winter campers. Outdoor winter sleep never felt this good. Features ThermalCore insulation consists of multiple TRM layers that are quiet yet thermally efficient Four-season capable, ASTM-tested R-Value 7.4 Lighter weight and significantly reduced packed size Air Sprung Cell construction, 10cm thick for plush comfort in any sleeping position XPRESS valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation simple Increased weld strength for greater durability