O'Neill Reactor II 5/3mm Mens Warm Back Zip Winter Wetsuit in Black The O'Neill Reactor 2 5/3mm wetsuit is an outstanding suit in terms of the high-grade neoprene used. This year the suit is 100% super stretch which means that when you move in the wetsuit it moves with you which has a double benefit of you being warmer as it fits better to your body along with you not getting as tired due to the flexibility. The O'Neill Reactor has always been a best-selling summer wetsuit but now we have a 5/3mm winter version it's got even better.   FEATURES   Back Zip Entry System For Ease Of Getting On And Off Ultraflex Neoprene Which Is Super Soft And Flexible For Great Performance Seamless Paddle Zones Which Is A Flexible Design With Minimal Seams For Unrestricted Movement Double Super Seal Neck Which Is 100% Super Stretch For Comfort And Flexibility Flatlock Seams Krypto Knee Pads A Durable And High-Quality Construction Wind Resistant Smoothskin Front And Back Panels For Additional Warmth 100% Super stretch Neoprene Throughout O'Neill Reactor II 5/3mm Mens Back Zip Winter Wetsuit 2024 - Black