Large-capacity Waterproof Expandable Hard Shell Backpack with USB Charging Hole(162 Black) Type-IP Camera Material: protein leather + memory

Material: protein leather + memory foam

EVA material shell

Five functions: mouse function

Number of keys: 5

Fast and stable transmission

Large-capacity Waterproof Expandable Hard Shell Backpack with USB Charging Hole(162 Black) Type-IP Camera Material: protein leather + memory1. Material: ABS 900D strong film, EVA, polyester 2. Function: waterproof, with USB charging hole, shock resistance, capacity expansion, cut resistance, dry and wet separation 3. Accommodates computer size: 17 inches 4. Design of USB charging interface on the side of the bag 5. Widened and thickened handle design, comfortable and durable 6. Two way zipper, more convenient to open and close 7. Side handle design, a variety of carrying methods 8.