SHERPA ADVENTURE GEAR Men's Tansen Long Sleeve Shirt 100% Plain Weave Polyester Imported The fabric has a ultraviolet sun protection factor (UPF) of 50+ Silky, 4-way stretch fabric is wrinkle-resistant and feels weightless on the skin Two zip pockets keep important documents secure: one hides under the horizontal chest flap; the other is a vertical entry Napoleon pocket Sleeves can be rolled up and secured with tab/button fasteners