Part of the Arena Team Line collection inspired by our swim champions and designed for the major swimming federations, the arena Team Women's Challenge Back One-piece is perfect for intensive and competitive swimmers. It's made from an extremely chlorine-resistant swim fabric that protects skin from the sun, is quick to dry and is super durable. Arena’s MaxLife Eco fabric offers maximum chlorine resistance and extreme durability, UPF 50+ UV protection and quick drying property. At least 50% of the polyester is recycled, perfect for intensive training. The open back in combination with the thin straps and high-cut leg provide maximum freedom of movement, excellent feel of water and a flattering look. It comes in a solid color with arena's name on the hip. It is lined through the front.