USABL Custom Embroidered Cream Umpire Shirts -100% Polyester Fabric Keeps You Cool And Maintains Its Shape In Any Environment. Fabric Wicks Moisture From The Body, Increasing Comfort And Providing An Intangible Performance Advantage. Shrink, Wrinkle, And Stain Resistant For A Durable, Long Life. Cut Roomy If You Would Like To Wear On The Bases Bump Down One Size!!!