Triple stitched, and bartacked like our pants for excellent durability. Our shirts feature pen pockets on the left sleeve, a back vent with a Dri-X-treme mesh backing, hidden button-down reinforced collar and front pockets with a hook-and-loop closure. Available in long sleeve and short sleeve in 5.4 ounce 100% cotton canvas or a 4.7 ounce 100% nylon ripstop. Long sleeve features a double-elbow and sleeve keepers to help keep your sleeves rolled up.