The remarkable Kompressor has three points of load-shrinking compression, stows into its own lid, and turns into a day pack for summit blasts or side hikes. The removable closed-cell foam back sheet and airmesh shoulder straps provide extra comfort. Also features light clip attachment point, hydration sleeve, light reflective clipping points, and ultra-light webbing. Makes a perfect sleeping back stuff sack. Constructed of 70D Double Ripstop Silicone Impregnated Nylon and 210D Nylon Double Ripstop for durability. Weighs 10 oz. Volume: 920 cu.in./ 15 liters.