Slim design black nylon business bag with adjustable strap and mesh panel. Blue SINCERE Business Backpack Black 18 pockets Waterproof/Water-repellent, with USB port, PC compatible Only used once, in excellent condition! Size (approx.) Height: 45cm Width: 31cm Thickness: 11cm When you open the side zipper, the thickness expands to about 10cm as shown in photos 6 and 7. Suitable for business trips, travel, commuting, and school.