<ul> <li>LIGHTWEIGHT DUAL DENSITY PADDING strategically placed for maximum comfort and protection.</li> <li>​​ANTI-MICROBIAL TREATED FOAM AND FABRIC to remove bacteria and odor. ​</li> <li>Strategically engineered top plate venting system. ​</li> <li>​Product has been certified by SEI to meet NOCSAE standards. ​</li> <li>Sizing Determined by Fitted Hat Size: S/M [6 1/2 - 7 1/8]; M/L [6 7/8 - 7 1/2]; L/XL [7 1/4 - 7 7/8].</li> <li>​Measure the circumference of your head just above your ears.</li> <li>[R​HH] for Right-Handed Hitters</li> </ul>