Sea to Summit Ether Light XR Insulated ASC Mat Large. Air Sprung Cell construction provides plush comfort ThermalCore technology increases the insulation value of the mat while reducing weight and packed volume compared to previous models. The Airstream pump integrated into the stuff sack and a high-airflow XPRESS valve make inflation and deflation quick and simple and a doubling in weld strength makes the XR more durable than ever. Specifications for Sea to Summit Ether Light XR Insulated ASC Mat: Manufacturer: Sea to Summit Color: Dark Grey Fabric/Material: 100percent TPU 100percent Nylon Features of Sea to Summit Ether Light XR Insulated ASC Mat Air Sprung Cell construction provides plush stable comfort Lighter more effective ThermalCore Insulation - the TRM film layer reflects back infrared energy to the sleeper ASTM-tested R-Value of 4.1 is perfect for extended three-season use Ovalised RF-welded construction for greature durability Airstream Pump integrated into stuff sack for simple inflation PillowLock patches secure your Aeros Pillow for a slip-free sleep High airflow multi-function XPRESS valve for easy inflation adjustment and deflation Package Contents: Sea to Summit Ether Light XR Insulated ASC Mat Sea to Summit A3403: Ether Light XR Insulated ASC Mat Large