Arctic Hunter B00478 – 15.6-inch Anti Theft Laptop Backpack – Blue Arctic Hunter B00478 – 15.6-inch Anti Theft Laptop Backpack – Blue Back cushion cotton: Yes Computer compartment: 15.6 inches Waterproof: Waterproof zipper and fabric Shock absorption: High density sponge, concave and convex design Shoulder straps: Doble root Pattern: Solid Color Shape: Vertical square Lining Texture: Polyester External USB charging Headphone hole design