FINA approved style that is fully compliant with FINA regulations. Aqualab® Innovation. Constructed from Speedo's unique LZR Pulse® fabric: LZR Pulse® provides muscle efficiency through reduction on muscle vibration. LZR Pulse® is water repellent, chlorine resistant, and fast drying. Unique 3D 3-Piece pattern is engineered to optimize swimmer's shape. Fit engineered from body scan data resulting in an optimum biomechanic fit.