ANTI THEFT BACKPACK: The computer backpack is equipped with a smart secure lock that is made of high strength zinc alloy with a solid, compact body to prevent theft and well safeguard all your valuables securely. The password lock is easy to set (Includes instructions), please see A+ for the detailed instruction. THREE POCKETS WITH MORE FUNCTIONS: Bange upgraded backpack has three separted pockets. The front one can fit one pair of shoes or other personal items, such as power bank, glasses, head set and so on. Per the middle pocket, there is a TSA lock, which can protect your valueable item. The separated laptop compartment can hold one 17.3 inch notebook, and our friendly design can be shockproof and waterproof. It's your best partner during business trip. WATERPROOF YKK ZIPPER: The unique design is the waterproof zipper. Bange is not only using high quality water resistant Oxford for the backpack body,but also using the waterproof YKK zipper to prevent your goods in the ba