The Aftco Overhead Air-O-Dobby Men's Performance Shirts are made of 100% polyester matte with thumbholes and antimicrobial treatment for odor control. This unique fabric has been created with Air-O-Dobby elevated cooling performance, a unique material that keeps you cool. Made with AFBLOCK UPF 40 sun protection and AFCOOL quick-dry moisture-wicking material, this performance shirt is made to be in the sun. Wear with confidence against the elements with AFGUARD 3M stain resistance.