The Champro Umpire Polo Shirt is constructed of 100 percent polyester. The featured DRI-GEAR technology fabric that wicks moisture away from the body. The Umpire Polo Shirt features the official colors and trim. The shirt also has a left chest pocket and comes in several different sizes.100 percent polyesterDRI-GEAR fabricWicks moisture away from the bodyLeft chest pocketOfficials colors and trimWARNING: This product can expose you to lead and phthalates, including di(2-ethylhexyl) phthalate (“DEHP”), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.