Fulfilled by our friends at Klymit Body Mapping Technology: Our patented V-shaped design delivers support and comfort no matter how you sleep ; on your side, stomach or back.Side Rails: Integrated into the patterning and construction, they provide a secure, comfortable sleep by centering you on the pad and inhibiting air movement while tossing and turning.Deep Weld Patterning: Unlike traditional pads that flatten the bag&';s fill, Deep Welds create expansion zones that allow your bag to fully loft beneath you for improved thermal comfort.Specs: INFLATED DIMENSIONS: 72 x 23 x 2.5 in / 183 x 58 x 6 cmPACK SIZE: 8 x 3 in / 20 x 8 cmWEIGHT: 16 oz / 454 gSHELL MATERIAL: 30D Polyester Top / 75D Polyester BottomASTM: 1.3INFLATION: 10-15 Breaths