Our most popular wetsuit ever, the Reaction has 100% Yamamoto Neoprene with SCS (Super Composite Skin) coating provides a low drag external surface and impressive buoyancy. Combined with our A-Flex jersey lining, the Reaction delivers high performance flexibility and buoyancy.The chest panel features a central, double layered panel of 3mm, neoprene laminated with our A-Flex material which maximizes stretch during respiration and improves comfort. The curved closure flap reduces rear collar height improving comfort and reducing chaffing.The tube construction in the lower leg combines more A-Flex material with a single seam to maximize the flexibility and promote a quick release from your suit in transition. Our Reaction also features 2mm Knee Flex panels which assist with knee flexing by reducing bunching behind the knee and improving functionality when running to T1. The textured forearm print onto our high stretch jersey allows the swimmer extra feel for the water and additional grip in the propulsion phase of the stroke which means more distance per stroke. The Reaction tiers buoyancy 4-5-4, centralizing core buoyancy to raise the position of the hips in relation to the rest of the swimmer. The buoyancy of the chest features two side panels of 4mm Yamamoto 38 cell neoprene. This accentuates natural lung buoyancy to optimize your upper body position relative to the legs. The 5mm Yamamoto neoprene in the torso supports the hips and lower abs, lifting the body in the water, reducing drag and improving speed. The 5mm panels in the back of the hips are laterally oriented in order to facilitate a raised body position when you roll to the side during breathing. The 4mm Yamamoto neoprene legs deliver the perfect blend of buoyancy without limiting drive from the kick. For increased flexibility, Blue Seventy has integrated the A-Flex Orange Jersey. This jersey material provides the Reaction's highly flexible 4 way stretch, 1.55mm arms and oversized underarm gussets.