Get Helmet Size Chart Inches PNG. This is an approximate chart. The same size medium helmet, for example, can fit differently based on the thickness of the shell and the inner padding.
Over time the protective foam in helmets will adjust to the contours of a user's head.
The circumference of your head should be measured at a point approximately one inch above the eyebrows in front and at a point in the back of the head that results in the largest possible measurement. Choosing the right size for helmets and protective gear is extremely important. This system allows the helmet to grow with the young rider. Helmet sizing varies by manufacturer, the above chart is a generally reference.