Designed for cool comfort and functionality over the long haul, this performance button up is crafted from ultra light ripstop fabric that's wicking. Antimicrobial, and sun-shielding, with mesh-lined venting at center back. Omni-Shade UPF 40 provides maximum protection for long hours in the sun. Omni-Wick technology actively breathes and pulls moisture away from your skin. Modern classic fit and has antimicrobial properties to keep it fresh and odor free over multi day trips. Omni-Shade, Omni-Wick 100% polyester ripstop.