One-piece suit in 3.5-mm Yamamoto neoprene with combination of superelastic and stretch linings Zip: Rear YKK zip with stainless steel sliding tab Size: anatomical and preformed on arms and legs Knee pads: performed in scratch-resistant Powertex neoprene Cuffs and ankles: aquastop system in single-lined superstretch Yamamoto smooth-skin neoprene Collar: single-lined collar with special Injection-Hook Velcro closure to avoid damaging the lining and stitching.