Exploring the outdoors means changing temperatures and conditions. Be prepared for whatever happens with this Royal Robbins Men's Expedition Pro Long Sleeve Shirt. This shirt is made with 100% recycled polyester and is designed to help regulate the body's temperature. The fabric wicks moisture away while also keeping stains at bay. It features a mesh yoke and ventilation on the back, helping you stay comfortable. As for functionality, it has closable chest pockets, a hidden, zippered pocket, and tabs for rolling up the sleeves. It also offers UPF 50+ sun protection.