100% waterproof laptop bag made of 420D nylon with double-sided PVC lining and waterproof PVC zipper with 3 folds to ensure waterproofness. Removable anti-knock compartment padded inside with mesh pocket and pen compartment, designed to protect the laptop. It includes an adjustable and detachable shoulder strap and becomes a backpack with padded straps to carry it comfortably. The SW18 includes a top handle, a front zip pocket and a flat zip pocket behind. The SW18 is fixed to ALL motorcycles thanks to the 4 BELTS INCLUDED.