Staying true to their comfort and durability, the XR Pro boasts ThermalCore technology which increases insulation value while keeping weight and packed volume to a minimum. 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, cold-weather hunters to winter campers. Outdoor winter sleep never felt this good.