50L Molle Assault Tactical Outdoor Military Rucksacks Backpack ACU color The Backpack is constructed with waterproof 600D Nylon material. Molle design, molle belt on the fornt and two sides. Comes with a zipper for outside pocket and a big mesh compartment inside for ease of use Wide & thick waist belt, comfortable for heavy duty work purposes Best Bag Ever, With 3 detachable molle pouches attached on front and two sides.