Speedo Men's Endurance+ Mercury Splice Brief Swimsuit 50% Polyester, 50% Pbt Imported Speedo exclusive endurance+ polyester fabric lasts 20 times longer to give you more value for your money Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine Four-way stretch technology provides a body hugging fit, great shape retention, and soft comfort Traditional performance brief with 3" side panel Made by speedo, the world's #1 swim brand