Speedo Men's UPF 50+ Sleeveless Mesh Rashguard Swim Tee 100% polyester Loose fit rashguard styling for more comfortable, forgiving fit with wicking technology Contrast fashion splice with mesh inset detail Trademarked "speedry" water repellant fabric for quicker drying and long lasting durability Uv block the burn offers tighter knit fabric for higher level of sun protection Made by speedo, the world's #1 swim brand