The Gul 25L Heavy Duty Dry Bag in Black is made from 500D Ballistic Tarpaulin for durability, added to the 1000D Ballistic Tarpaulin base and reinforcements this dry bag will stand the test of the time. In addition the 25L Heavy Duty Dry Bag is lightweight, easy to stow, has a snap shut dry fastening and a removable webbing shoulder strap.