DetailsTYR Women's Size Chart Stay a step ahead of the competition in the TYR Women’s Orion Diamondfit Swimsuit. Constructed with TYR’s most durable textile, Durafast Elite™ - the DORI7A performance swimsuit utilizes high denier poly fiber and innovative circular knit construction to combine the strength and colorfastness of polyester with the comfort of spandex. Featuring a medium neckline, sleek/flexible straps, keyhole back, moderate cut leg and graphic print, the Diamondfit is ideal for athletes who want reliable coverage during every swim. TYR performance swimsuits are fully lined, provide UPF 50+ sun protection, 360 degree range of motion and an antimicrobial lining for freshness. All Durafast Elite™ suits are chlorine proof and sustain an impressive 300+ hours of performance.