Fashion and Functional Pockets Rational use of exterior and interior spaces Functional pockets on the leather back - easy access to supplies when you travel or study. Large interior space, multiple compartments, can hold a 17-inch computer (with computer pad, avoid-drop) .Reasonable configuration of interior space to keep your items organized. Backpack Details Lockable Zipper Thick and high-quality hardware zipper - smooth and unobstructed.Zip lockable-protects things from being stolen. -no lock included-Only the zipper pulls are secured, so you can choose how you want to lock and keep your personality. Leather Portable Combination of canvas and leather, fashionable and beautiful.Securet hands from rubbing when used as a carry-on duffle bag. Practical Buckle Total of 4 buckles on both sides.Buckles can be adjusted backpack contents to stable shape.Ensure that your organized items will not shift during exercise. Size Compare 18.5 inch backpack: H 18.5 x L 12 x W 6.5 inches;22.5 inch backpack: H 22.5 x L 14 x W 7 inches. Model Show: 3 Carrying Ways Backpack Duffel Bag Handbag