The stylish, extremely durable and chlorine-proof Women's Marbled Challenge Back Swimsuit from arena Performance line is ideal for both competitive and regular swimmers who swim frequently in the pool. The highly chlorine-resistant MaxLife Eco fabric with integrated UPF 50+ UV protection is extremely quick-drying and long-lasting. This eco-friendly version of arena's MaxLife fabric contains at least 50% recycled polyester from PET bottles. Plus, the production process was optimized to save energy, reduce CO2 emissions and minimize water usage. The open back, thin straps and high-cut leg provide maximum freedom of movement, excellent feel of the water and reduced drag. The OEKO-TEX® STANDARD 100 of the fabric means that it has been tested for harmful substances, ensuring is harmless to human health and the environment.