Koolertron Outdoor 40L 600D Waterproof Oxford Cloth Military Rucksack Tactical Backpack Bag ACU Camouflage Sports Travelling Hiking Bag With ergonomic design, the straps and back are permeable and soft. Material:600D Oxford cloth,Built-in waterproof layer. With high strength shoulder strap and sturdy buckles, this backpack can support heavy weight Padded and adjustable shoulder straps relieve pressure on shoulders while carrying heavy loads Dimensions: 18.9" x 13.7" x 8.7"inch (LxWxH)