tigernu splashproof 15.6inch lapbackpack no key tsa anti theft men backpack travel teenage backpack bag

note: t-b3105-1 no usb,with padlock t-b3105-2 with usb,with padlock t-b3105-3 with usb,with rain cover,with tsa lock,no padlock t-b3105-4 with usb,rain cover,tsa lock ,waterproof zipper and 17" expandable structure,no padlock features: 1. high-density nylon material, the designer embed stripe of different color,making it looks actively 2. dual-layers four-teeth anti-theft zipper with padlock 3. 4.0 fast charging port, charges up to 20% faster than standard cables and transfers da