The Sitka Gear Men's Tech Tee wicks sweat and dries fast to keep you at the top of your game on the hottest days. Built with fabric that is lighter than air but packed with UPF 50+ to protect you from harsh rays. FeaturesUltra-light fabric: 100% polyesterSweat wicking and quick drying to keep you coolUPF 50+ sun protectionPolygiene Odor Control Technology reduces odorSmooth flatlock seamsSlight drop hem for added coverageForward shoulder seams for comfort while wearing a pack