O\'Neill Reactor 2 2mm Youth Neoprene Top The O\'Neill Reactor 2 2mm wetsuit top for Children uses 100% super stretch neoprene which means not only are they comfortable to wear but as you move they move with you. The major benefit of these wetsuit tops is they can be worn on there own in the warmer summer months in the water or under a wetsuit for extra warmth in the cold winter months. So if you want your Child to be able to be in the water for longer and stay warm and comfortable then it really is worth considering this wetsuit top at a great price and incredible materials. FEATURES - 100% Super Stretch Ultra-Flex Neoprene - Eco Carbon Black in Neoprene - Pull Cord To Attach To Boardshorts