Amaze your friends with the amazing. unbelievable. 1439 Expandable Messenger Bag. By simply unzipping the surrounding zipper. you can stop parties. wow associates. and be the most popular kid in school by instantly doubling the size of this bag. Main compartment with one zippered pocket and a dividerBack pocket can be unzipped and used to attach bag to piece of rolling luggageFully expandable with a zipper that goes around. allowing the depth to be doubledOne zippered pocket with zipper closure underneath the flapOne zippered pocket on the flap for items one wants handyPocket on back can be used to carry flat items2" wide adjustable nylon webbing shoulder strapDouble buckle closureWater resistant coatingWIDTH 14.25 inches / 36.2 cm Height 11 inches / 27.9 cm Depth 3.5 (6.5 expanded) inches / 8.9 (16.5 expanded) cm Weight 1.4 lbs / 0.65 kg Volume 548 (810 expanded) cubic inches / 9(13 expanded) liters Fabric 1000D CORDURA® Classic fabric Warranty Limited Lifetime Warranty against manufacturing defects