Push performance to the limit in the TYR Women's Thresher Open Back Swimsuit . Designed to help you achieve your best swim, this competition suit showcases a combination of innovative features. With embedded hydrophobic fiber this technical suit maximizes performance by reducing drag in the water. Increasing the speed and efficiency of every swimmer, the Thresher's advanced level of compression helps to maximize core stabilization and support. In addition, flatlock seams conform to the athlete's body, providing a durable, 360 degree stretch, and uninhibited mobility.