The Speedo Hyperboom Splice Muscleback 1 Piece is designed for regular training and fitness.It features a bold, iconic ??boom?? print on the side panels, providing a modern and dynamic look.The muscleback design offers excellent freedom of movement and support, making it comfortable for long sessions in the water.Constructed with Speedo?s Endurance+ fabric, it is 100% chlorine resistant and designed to retain its shape and color over time.