Speedo Men's Water Grid Hydrovolley w/ Compression Jammer Outer: 100% Polyester; 80% Nylon/20% Spandex Comfortable, quick drying and super lightweight ripstop fabric to resist tearing or ripping Built in compression jammer attaches smoothly at waist Mid length 19 inch outseam for fit mid thigh or above the knee UV Block the Burn with UPF 50+ offers tighter knit fabric for higher level of sun protection Made by Speedo, the world's number 1 swim brand