MGgear Messenger Cross Body Outdoor Biking Backpack - 2 Color Polyester Zipper closure Main compartment with dual zippers and rain flap : 17.5 Inch H x 13 Inch W x 6.5 Inch D Front dual zippers compartment (in Inch): 10 H x 9 W x 1 D; Front accessories pocket: 10 H x 6 W Left zipper pocket (in inch): 8 H x 4.5 W with mesh water bottle pocket and adjustable stripe; Right zipper pocket: 9 H x 4 W Adjustable padded shoulder strap with lock buckle and elastic cell phone holder; Padded back panel Material: Polyester