O'Neill Psychofreak 4.5/3.5 FSW (Black) XDS Air Neoprene for Superior Insulation Factor Chest/Back/Upper Leg Ultra Flex XDS Arms/Shoulders/Lower Leg for Increased Flexibility Fluid Seam Weled on Outside and Inside of Suit to Lock Water Out Double Rolled Smooth Skin Neck Closure Krypto Knee Pads