Rokk Approach Hiking Day Pack (19 x 13.5 x 9-Inch with 2250 cu. in Capacity) Hydration compatible, 2250-cubic-inch capacity daypack with three main compartments and multiple organized pockets Fully adjustable shoulder straps with Comfort-Tec gel beads for cushioning; adjustable waist belt and sternum strap Cushioned back panel with Air Comfort System air channels for ventilation; compression straps to secure load Mp3 pocket with headphone port and waterproof zipper; front pocket organizer with detachable key fob Pack measures 19 by 13.5 by 9 inches; lifetime warranty