Sizing Chart
The following is a sizing chart.  This is to be used as a reference, but to properly fit a helmet it is important that you try it on.  If you are not able to try it on prior to purchasing product, it is important that you do so upon receiving the helmet.  Dealers are not able to exchange used helmets. Fit is very important for both safety and enjoyment of your helmet.

Auto & Motorcycle
SIZE     CENTIMETERS     INCH'S     
  XXXXS       50          19 3/4                              
  XXXS        52          20 1/2                       
  XXS         54          21 1/4    
  XS          54          21 1/4                     
  S           56          22                              
  MED         58          22 7/8                       
  LG          60          23 5/8                        
  XL          62          24 3/8                        
  XXL         63          24 3/4