Helmets: Sizing Chart & Fitting Instruction:
Measure the circumference of head from center of forehead around head slightly above ears, and back to center of forehead. This should be the widest part of your head. Make note of measurement and refer to sizing chart below.
S: 55-56 cm / 21.50″-22″
M: 57-58 cm / 22.25″ – 22.75″
L: 59-60 cm / 23″ – 23.50″
XL: 61-62 cm / 23.75″ – 24.25″
2XL: 63-64 cm / 24.50″ – 25″