Baggallini Metro Backpack features a convertible strap system that allows it to be worn as a backpack or a sling bag. Material: Water-resistant woven nylon with a smooth polyester lining. Dimensions: Approximately 11.5 inches high, 9 inches wide, and 4 inches deep. Organization: Includes a main compartment with a dual zip entry, a magnetic flap cover, and a front vertical zippered pocket.