Klymit Insulated Static V2 Sleeping Pad - Experience next-level comfort with the upgraded Insulated Static V2! A comfortable, lightweight backcountry pad providing winter insulation and four-season comfort, the Insulated Static V2 packs down small and delivers an outstanding ASTM R-Value of 4.2. Multiple reflective film layers and synthetic insulation add another layer of protection from the cold ground, and dynamic side rails cradle you comfortably on your pad for a more restful sleep. Features: Four-Season Sleeping Pad: ASTM R-Value of 4.2 for a warm, insulated sleeping pad in even the coldest conditions. Body Mapping Technology: Our specially developed V-shaped design delivers superior support and comfort no matter how you sleep; on your side, stomach or back. Side Rails: Integrated into the patterning and construction, side rails help 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.