150D Nylon rain dobby body fabric. 315D Cordura reinforcement fabric. The Sierra Designs Revival 50 Backpack boasts a solid 50 liters of carrying capacity in a simple, lightweight pack. The pack's smart design, solid durability, and comfortable carrying suspension system come together to make a bag you can take across Europe or along the mountain trails for a weekend. Pack's carrying capacity is ample for an overnighter, long weekend, or smartly-packed longer trip, and if you don't need that much space, cinch down the pack's compression straps. Hydration sleeve and water bottle pockets provide stash spots for your H2O close at hand. Fulcrum Suspension incorporates soft padded shoulder straps and hip-belt straps for a comfy ride. Ventilation Conduit backpanel lets airflow access your back and shoulders to minimize sweatiness. Trekking pole loops hold your poles when you don't need them. SPECS for S/M. Torso Fit Range: 16-18.5’’. Volume: 2950 cubic inches. Weight: 3 lbs 10 oz. Dimension: 30 x 13 x 14’’.