100% Polyester Machine Wash This top-selling on-field cap is crafted with PULSE, a breathable, poly-stretch fabric featuring R-ACTIVE tech. Engineered for performance, it fits players of all skill levels. Key features include 3D Embroidery, a Mid Pro profile, PULSE Performance Poly-Stretch fabric, a UForm visor, Stay-Dri Performance Stretch sweatband, and a knitted construction. Sizes range from Y (6 3/8 - 6 5/8) to LG-XL (7 3/8 - 7 5/8).