Speedo Men's Hydrovolley Swim Trunks w/Compression Jammer Shell: 100% Polyester, Jammer: 80% Nylon/20% Spandex Imported Comfortable quick drying and super light ripstop fabric to resist tearing or ripping Built in compression jammer with raised gel silicone printing attaches smoothly at waist Mid length 19 inch outseam for fit mid thigh or above the knee Uv block the burn offers tighter knit fabric for higher level of sun protection Made by speedo, the world's number 1 swim brand