18 Inch MGgear Student School Bookbag/Children Sports Backpack/Travel Carryon Polyester Zipper closure Main dual zippers compartment with rain flip (in inch): 17.75 H x 12.5 W x 6.5 D Second dual zippers compartment (in inch): 16 H x 10 W x 1.75 D Padded back panel and padded adjustable s-curved shoulder straps. Daisy chain on the front for attaching extra gear and 2 mesh water bottle pockets for keeping hydration easy to access. Official MGgear product by MyGift