Diamonds are the brightest and most resilient gem on earth. Taking its cue from its logo, arena’s Diamonds collection dedicated to the resilience of us all, that like diamonds we shine brighter when we are together. The arena Diamonds Challenge Back One-piece for women is perfect for regular and competitive swimmers. Its made from a chlorine-resistant sustainable swim fabric that protects skin from the sun, is quick to dry and is super durable. The open back in combination with thin straps and high-cut leg provide maximum freedom of movement, excellent feel of water and reduced drag.