O'Neill Wetsuits Men's Heat 43mm 3Q-Zip Fluid Seam Weld (Black Small)br 43mm 100 UltraFlex Neoprene forfit function and flexability br Exterior Fluid Seam Weld Construction Double Super Seal Neck br Strategic Seamless Paddle Zone br Firewall X Type Interior Chest and Lumbar br Urethane Coated Covert Code Red Back Zipper keeps water from entering