Features of the Gregory Inertia 30L H2O Pack Includes 3D hydro quick drying, soft molded reservoir (3 liter) with integrated drying hanger Dedicated zippered hydration sleeve with speedclip hydration hangar for a one-handed, snap-and-go connection Die-cut shoulder harness with magnetic sternum buckle and hose clip for the drylock bite valve Breathable die-cut backpanel and removable webbing hipbelt Sunglass quickstow system on shoulder harness for quick, secure and scratch-free access to shades Top zippered pocket with key clip and front zippered pocket with soft touch liner to protect valuable Items Front and Dual side stretch mesh pockets for quick storage Trekking pole/tool attachment with bungee closure system Custom comfort-grip molded zipper pulls and molded webbing keepers for strap management Fabric Details External Material: 100% Nylon Pack Body: 210D Honeycomb cryptorip nylon Pack Bottom: 420D High Density nylon Lining: 135D High Density embossed polyester Suspension: Multi-Density closed and open cell foam