Features of the Mountain Khakis Men's River SS Woven Shirt 4-way stretch UPF 30+ Quick-drying Moisture wicking Vented back yoke for breathability Flip-n-snap collar for sun protection Branded dyed to match buttons Sunglass chamois set inside side seam on weArer?s right hem Utility loop on weArer?s left chest pocket Clip label on interior placket MK Icon embroidery on back yoke Double entry chest pocket. Top drop in pocket with button flap closure and side entry with zipper closure Fabric Details 84% Nylon, 16% Spandex