High Sierra Impact Backpack Large, front-load main compartment. MP3 player pocket with headphone port. Large gusseted front pocket holds accessories. Core organizer compartment with multiple pockets. Contoured, padded shoulder straps. Comfortable padded core back panel. Mesh beverage pocket Convenient grab handle Materials: Mini-Hexagon Ripstop, 600-denier Duralite Size: 17.25" x 11.25" x 8" Capacity: 1450 cubic-Inch