FEOYA Men Fitness Swimming Trunks Swim Boxer Brief Sexy Swimsuit Square Cut Swimsuit Elastic closure ATTENTION - Because Asian size is about 3 size smaller than US size,please add 3 sizes up and bought the item on the U.S size GOOD FLEXIBILITY - Elastic waist,good flexibility allows you easily move around in QUICK DRY AND SOFT ENOUGH - Shell:82% Polyester mix 12% Spandex;Lining: 95% Polyester mix 5% Spandex,provide you more comfortable,less uneasy PROFESSIONAL JAMMER SWEIMSUIT - Low Rise, fitted design,good stitching, if you prefer a looser fit, go up a size