SA Performance Shirts feature relaxed fit construction for optimal range of motion. Made of UPF 50 4 Way Stretch Material, designed to keep you cool and dry even on the hottest days. With features like mesh underarms and soft nylon threads, these are made for every activity. On the front neck you will find a sunglass holder loop and at the bottom hem is a hidden sunglass microfiber cleaning cloth. Find Your Adventure with SA.