Durable, quick-drying and sporty women’s swimsuit for regular and competitive swimmers, available in an extended size range from junior to adult sizes (please refer to the sizing chart for details) Challenge Back silhouette features an open back with thin straps and high cut leg for maximum freedom of movement, excellent feel of water and reduced drag, and front lining for comfortable coverage Made with MaxLife Eco fabric, arena’s most advanced and longest-lasting fabric that provides maximum chlorine resistance and extreme durability, UPF 50+ UV protection, and has quick-drying properties Our most popular back style for swimmers, arena’s challenge back 100% Polyester suit maintains superior softness, maximum durability and long-lasting performance in chlorinated water all season long Great for intensive training and competitions, this women’s and girls’ swimsuit is designed for maximum comfort, maximum range of motion and zero distraction to keep you comfortable lap after lap Whether you're a competitor or simply dedicated to water sports, a world-class swimsuit designed for longevity will enhance your performance and experience. We create suits for swimming federations and clubs using innovative materials and athlete-tested styles, like our Team Challenge Back One-Piece. Designed with slim, supportive straps, a high leg and a large cutout in the back.100% chlorine-resistantMaxLife Eco is our new responsibly sourced swimsuit fabric for sustainable performance. Made from at least 50% recycled polyester, this innovative material fits well and retains its shape over time. Integrated with UV 50+ protection and drying rapide.