This lightweight long sleeve is designed for long hours under the sun, keeping comfort at the forefront with smooth flatlock seams that help prevent irritation through the shoulders and arms. The 4-ounce polyester jersey dries quickly with sweat-wicking FastDry® technology, resists odor with Carhartt Force®, and features Sun Defender™ UPF 50+ protection to block harmful rays, so you can stay focused through full days on the job, including time spent on the water.