Synergy Endorphin Full Sleeve Wetsuit - Men's M2 Silicone treated neoprene makes the suit non-porous, producing low friction for maximum glide. Aerodome SmoothSkin covers the entire front body and lower leg panels, as well as the side panels, promoting superior flotation and nearly eliminating friction for maximum glide. The special lining absorbs far less water than is typical, keeping this suit light and allowing it to peel off easily in transition. SuperFlex and HiFlex rubber on the shoulders and arm panels boast an unsurpassed 680 percent flexibility.