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 divider Back pocket can be unzipped and used to attach bag to piece of rolling luggage Fully expandable with a zipper that goes around, allowing the depth to be doubled One zippered pocket with zipper closure underneath the flap One zippered pocket on the flap for items one wants handy Pocket on back can be used to carry flat items 2" wide adjustable nylon webbing shoulder strap Double buckle closure Water resistant coating WIDTH 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