Offering classic Speedo style, our Thinstrap Muscleback swimsuit is a great choice for lessons and training. Sleek in black with contrasting pink straps and Speedo logo, the muscleback style includes thin, supportive straps for total flexibility during their swim. Offering higher chlorine resistance than standard swimwear fabrics, the swimsuit provides excellent shape retention and fits like new for longer with CREORA® HighClo. If you're looking for great -credentials, it's got those, too: our exclusive EnduraFlex fabric is made from 100% recycled pre-consumer waste, such as recycled fabric waste from factories.