Speedo Men's UPF 50+ Lifeguard Short Sleeve Rashguard Swim Tee 51% Pbt, 49% Polyester Imported Endurance lite offers 10% less weight but same long lasting property of regular endurance+ Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine Athletic traditional fit rashguard for added uv sun protection Designed for the active lifeguard Made by speedo, the world's #1 swim brand