TYR Women's Mercury Diamondfit Swimsuit Stay a step ahead of the competition in the Women's Mercury Diamondfit Swimsuit. Designed for today's athlete, the DME7A is constructed with TYR's most breathable textile, Durafast Lite. Featuring a medium neckline, sleek/flexible straps, keyhole back and moderate cut leg, the Diamondfit is ideal for athletes who want reliable coverage during every swim. In addition to a bold print and black trim, the Mercury is created with UPF 50 technology and provides sun safety for every outdoor activity. TYR performance swimsuits are fully lined, ensure 360 degree range of motion and sustain an impressive 200 hours of performance.