Engineered For Competition Showcasing hydrophobic construction and low-profile flatlock stitching, the Fusion 2 Aerofit Shortjohn Swimsuit reduces drag for maximised performance in the water. Combined with tried-and-true innovations like Fabrication Logic and Fluid Channel Dynamics, Fusion 2™ Aerofit speed suits allow for superior flow, while calenderised Isolated Compression technology provides more glide efficiency and increased speed. It's what happens when the past and the future meet at the swim lab. Fusion 2 Construction Showcasing hydrophobic construction and low-profile flatlock stitching.