Specification: Fabric Material: PVC + polyester Material: Oxford fabric Shape: Square type vertical section bags Open Lid: Zipper Processing method: Soft face Size: 16.92'' * 10.23'' * 4.33'' Internal structure: computer sidekicks, mobile phone bags, document bags, zipper bag,patch pocket and pen bag Function: wear-resisting, lighter and shockproof , breathable, with USB port Function: charge usb backpack, student bag, outdoor travel bag Besides being the safest backpack it is also the most convenient backpack with features such as: - Integrated USB charging port - Illuminating safety strips - Water repellent fabric - Weight balance - Luggage strap - Adjustable open angles - YKK zippers - Advanced storage design - Shock-proof Note: There is no mobile power comes with the backpack inside. If you want to use External USB Charge Function, you have to do as follows: 1.Buy a mobile power 2.Connect your mobile power with the USB interface inside the backpack 3.Connect your phone with the USB interface outside the backpack 4.Charging begins. There are 2 kinds of mobile power in the market. 1:Plug in your phone, you can start charging 2:Plug in your phone also need to press button of mobile power then start charging To cope with this backpack, we suggest purchase of the first mobile power. Package Including: Anti-theft backpack * 1pc
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