Chrome Urban 20L Waterproof Backpack - Unisex - Lightweight, waterproof, rolltop backpack made for urban exploration - Dimensions: 21"-24"H x 11.5" top - 10.5" base W x 5"D - Knurled welded seams maximize the weld surface area & provide extra strength - Reflective attachment loops for U-lock & other storage - Ergonomic shoulder straps and 3D molded back panel, both designed for maximum comfort - Internal padded device sleeve fits up to a 15" laptop - Magnetic top close