Made from the most durable and flexible fabric from TYR, Durafast Elite, the RDUS7A uses a high denier poly fibre and an innovative circular knit construction to combine the strength and colour resistance of polyester with the comfort of spandex.Offering minimal coverage and a compressive fit for reduced drag, the Durafast Elite brief is capable of withstanding over 300 hours of use while maintaining a comfortable fit on your body and is 100% chlorine resistant.