UrbanSport Stylish Multipurpose Student School Backpack/ Outdoor Backpack/ Bookbag" /> Main compartment with dual zipper: 16 .5" H x 12" W x 5.5" D Second compartment with dual zipper: 12" H x 10" W x 1 .5" D; Top pocket with zipper: 3" H x 7" W (interior dimension) Left bottom velcro pocket with mesh zipper pocket; Right bottom velcro pocket with D-ring for attached extra gear 2 mesh bottle water pockets; Padded adjustable shoulder straps; Haul handle Material: Polyester