Part of the arena Team Line collection is inspired by our swim champions and designed for the major swimming federations, the arena Team Girls' Challenge Back One-piece is perfect for intensive and competitive swimmers. It's made from an extremely chlorine-resistant swim MaxLife Eco fabric that protects skin from the sun 50+, is quick to dry and is super durable. At least 50% of the polyester is recycled, perfect for intensive training. The open back in combination with the thin straps and medium-cut leg provide maximum freedom of movement, excellent feel of water and less drag. It comes in a solid color with arena's name printed on the hip. It is lined through the front from size 10 upwards.