Tensor Alpine brings warmth and comfort to cold weather camping This pinnacle mountaineering pad offers lightweight, compact, extreme warmth without sacrificing comfort. Three layers of suspended metalized film and a unique construction efficiently retains your own body heat. Whether at base camp or high on the mountain before a summit push, the combination of compact size, light weight and warmth cannot be beat. A zero-profile, multi-functional, micro-adjustable valve offers convenient inflation and fast deflation. The included Vortex pump sack provides fast and easy inflation without introducing moisture into your pad. Patent-pending Spaceframe baffles are low-stretch trusses that provide greater stability and point deflection resistance than competitors. Tensor Alpine's unique construction sleeps quieter than other pads. Features Fabric20D PU Polyester Body 3 inches of stable, cushioned loft Undulating lateral baffles Vortex pump sack providing easy and fast inflation & minimises moisture entering the pad New zero-profile valve for customised control over your inflation Spaceframe baffles for unparalleled stability and weight distribution 3 layers of suspended Thermal Mirror metalised film for lighter and quieter insulation with an unprecedented warmth-to-weight ratio Patent US 10.213.009 B2. Protected by the Nemo Lifetime Warranty Specifications RegularMinimum weight: 475gPacked weight: 555gPacked size: 20 x 8cm diameterDimensions: L 183cm | W 51cmThickness: 8cmR-value: 4.8 (All season climate use - extreme cold)Insulation Type: Aluminised Film