TYR Men's Durafast Elite Solid Square Leg Swimsuit 94% Polyester / 6% Spandex Imported Offering reduced coverage on the legs and a compressive fit for reduced drag, Durafast Elite Square Leg is able to sustain 300+ hours of use while maintaining a comfortable hold on your body and is 100% chlorine proof. the Durafast Elite Square Leg is able to sustain 300+ hours of use while maintaining a comfortable hold on your body and is 100% chlorine proof. Durafast Elite performance and training fabric Able to sustain 300+ hours of use Durable flexible and comfortable Drawcord waist for a secure fit