1.5mm STEAMER:One Piece Suit, Non-Hooded SteamerYamamoto Neoprene (Grade 39) – Open CellBlack Nylon inner liningGlued and blind stitched seems for added protectionProtective knee and NEW improved anti-slip cushioned chest loading padLycra Binding on cuff and rubber seal around neckPK Zipper up the back with added velcro to secure zipper