ThermalCore insulation consists of multiple TRM layers that are quiet and reflect back infrared energy to the sleeper for increased insulation Extended 3 season capable, ASTM-tested R-Value of 4.1 Lighter weight and significantly reduced packed size compared to prior models Air Sprung Cell construction, 10cm | 3.9in thick for plush, stable comfort in any sleeping position XPRESS valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation a breeze Size Tapered - Regular (72 x 21.5 x 4 inches) Color Grey Brand Name Sea to Summit Item Depth 4 inches Model Name Ether Light R4.5 Insulated ASC Mat - Regular Unit Count 1.0 Count Item Weight 1 Pounds Manufacturer Sea to Summit Model Number A3402 Fill Material Air Material Type Nylon Cover Material Nylon Item Thickness 10 Centimeters Item Dimensions 72 x 21.7 x 4 inches Number of Items 1 Number of Layers 2 Product Benefits Effective thermal insulation, lightweight, easy inflation and deflation, durable construction. Construction Type Air Sprung Cell Additional Features Dual Valve Included Components Carry Bag Water Resistance Level Not Water Resistant Manufacturer Part Number A3402 Item Firmness Description Medium Plush Specific Uses For Product Sleeping Pad Mattress Comfort Layer Material Polyfoam Item Dimensions L x W x Thickness 72 L x 21.7 W x 4 Th Global Trade Identification Number 09327868162574