Constructed with TYR's most durable textile, Durafast Elite - the RDUS7 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 Fabric and Care Durafast Elite: 94% Polyester/6% Spandex Hand wash with cold clear water. Features Brief offers maximum range of motion and minimal drag. Inner drawstring for secure fit. Antimicrobial lining. Sizing/Fit Competition swimsuits are engineered to fit tightly on the body in order to reduce drag, and will feel slightly looser in the water. Swimmers wishing to achieve a looser fit are encouraged to choose a larger size.