Mares Mens Flexa 8/6/5mm Wetsuit 100% ultra-stretch Neoprene resulting unparalleled comfort & freedom of movement Custom neck closure eliminates snagging suit materials Trilastic Material, Thermo Plush Inside, Back Zipper, Skin-On-Skin Zipper Seal Supratex Anti-Scratch polyurethane knee pads 8mm on torso, 6mm on arms and legs, 5mm seals at the neck, wrists and ankles