Speedo Men's UPF 50+ Fitness Long Sleeve Rashguard Swim Tee 80% Nylon/20% Spandex Imported Traditional athletic fitted rashguard silhouette with locker loop and side mesh pocket Raised silicone gel printing for added water resistance and for enhanced compression Quick drying easy care nylon/spandex blend perfect for pool to gym Uv block the burn offers tighter knit fabric for higher level of sun protection Made by speedo, the world's number 1 swim brand