Biaowang anti-theft travel backpack is equipped with a smart combination lock with durable Metal Zippers to detour theft and to safeguard your valuables securely. Also a hidden theft proof pocket on the back designed to protect your personal valuables such as passport, phone, ID card and wallet etc. from being stolen. The backpack is also equipped with USB charging and headset port design: Charge or connect your electronic devices with ease while on the go. With a built in USB charger port outside and a built in charging cable inside, this backpack offers you a more convenient way to charge your smart phone/tablet anywhere. Also the headphone interface frees your hands when enjoying music. Large and organized compartments: 180° Flat open professional backpack with multiple compartments. it has two separate padded protective compartments hold 15 Inch Laptop/MacBook, iPad, Tablet etc.. Inner elastic straps to keep your devices in place. It has 1 theft proof back pocket (for passport, wallet, phone, ID card) ,7 inner pockets (for power bank, compact umbrella, water bottle, pens, books, cloths etc.) & 3 outside card size zip pockets with detachable key holder (for keys, metro card, earphone, coins) . The material is water resistant, durable and solid: Made of Water Resistant and Durable Polyester Fabric with metal handle and zippers ensures a secure and long-lasting usage everyday. Upgraded fabric with excellent texture, featured with durable water resistant and cut resistant keep your belongings dry and safe from unexpected rain.