When it comes to heavy-duty, long sleeve work shirts, the Mason is the whole package—in our humble opinion. It's comfortably cut with movement in mind from 100% cotton ottoman, then washed & peached for an exceptionally soft finish. This innovative button-down offers UPF 50 protection, keeping you safe from the sun's harmful rays. As functional as it is easy-wearing, the Mason features roomy utility chest pockets, including a handy pencil stall and a drop-behind pocket just for your cell phone. High-stress seams are reinforced with triple needle stitching, and industrial strength, heat-resistant buttons stand up to years of rigorous wearing and washing. The Mason is the reliable work shirt you'll want on your back, day in and day out, for the toughest of jobs.