Measuring your head for helmet fitment is the right place to start, but it is only a guideline. Different shapes of heads might require a slightly smaller or larger helmet in any given model. Trying on the model you are interested in is always recommended. A helmet should be as snug as possible, without being so tight that it will give you a headache. It’s best to be fitted by a professional.

1

Begin by measuring the circumference of your head with a tape measure or a lengthy string that you can line up with a ruler. Start above the ear and circle around completely, resting it in about a half inch above the eyebrows and at the fullest part in back. Measure multiple times to ensure you don't measure to small or large.

2

Compare your measurements with the size chart above. If your measurement falls between two sizes, opting for the larger size is recommended.