tigernu anti theft nylon 27l men 15.6 inch lapbackpacks school fashion travel backpacking backpack male backpack for lapc1223

compared: 1. model 15.6inch: no usb, with padlock 2. usb 15.6inch: with usb, with padlock 3. usb upgrade: with usb, with padlock, with expandable structure feature: 1. selected splashproof material 2. anti theft double layers zipper, anti theft padlock 3. large capacity, earphone hole design 4. external usb charging port, only usb port, power bank not included 5. expandable structure design: only "upgrade" including please note: the payment of import duties is the ob