Manhattan Portage Medium NY Bike Messenger Bag High-Quality CORDURA Plus Nylon, by Invista 11.81" high 7.87" wide Large opening to access main compartment Strong Velcro closure along with two buckle closures Interior zippered compartment to separate smaller items One large zip pocket below flap for accessories 21 x 12 x 8 inches (53.5 x 30.5 x 20.5 cm) (WxHxD)