Mizuno MVP G2 MBH200 Adult Fitted Batter's Helmet 380224
Fit GuideHow to find your hat size
Place a measuring tape around your head just above the ears (Like you would place a hat on your head). Take the total circumference (distance around) in inches and match it to the chart below. For example: If your head measured 221/2 inches, your hat size would be 71/8.