Speedo Women's Endurance Lite Texture Zip Front Rashguard 100% Polyester Imported Endurance lite fabric - 10 percent lighter weight that won't weigh you down in the water, resists sagging, bagging and fading Uv block the burn protective tighter knit fabric provides a higher level of protection from the sun's harmful rays and has an improved fit so over-stretched product does not decrease the upf rating UPF 50+ protection