Waterproof nylon jacquard, anti-water splashing & water repellent. Dual layers four-tooth anti-thief and anti-tear zipper Scratch-proof, stab-resistant, smooth and durable Ergonomic design, breathable mesh, soft pad and S-shaped straps Ergonomic design Keeps air permeability and decreases luggage pressure (W34 X D18 X H50)CM