Speedo Men's Must Be It Jammer Swimsuit 78% Nylon, 22% Spandex Imported Made with 78 percent econyl, a nylon fabric made from 100 percent post consumer nylon yarn waste Retains its shape up to 10X longer than traditional swimwear fabrics Offers 4X the compression of standard fabrics and is twice as strong 30 percent more resistant to fiber breakage in chlorine compared to power flex Good for the environment, even better for swimmers