Dunes Moon Suit  Steamer 100% D-Flex stretch with titanium infused in lining of jersy,lined with fire fibre  gbs  and  liquid sealed on the out side  number 10  chunky zipper that is lockable durable  and no need to have zipper stopper ,cufs liquid seal to prevent leakage as well as the inside of the chest zip opening,minimal  seames with dunes latest  paneling W back panel which allow  more stretch across the back.