THH Helmet Size Guide

Wrap a measuring tape around the crown of your head, place it above your ears and eyebrows. Use the measurement to choose from the size ranges mentioned below.

SIZE	Head Circumference  (in cm)
S	55 - 56
M	57 - 58
L	59 - 60
XL	61 - 62
2XL	63 - 64
3XL	65 - 66