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Halfshell Helmets (except Substance)

SizeCircumference(in)
Nipper Mini48 - 51 cm18.9 - 20.1
XXS / XS | Nipper Maxi52 - 54 cm20.4 - 21.3
S / M54 - 56 cm21.3 - 22
L / XL57 - 59 cm22.4 - 23.2
XXL59 - 60.5 cm23.2 - 23.8

Substance

SizeCircumference(in)
S / M54 - 58 cm21.3 - 22
L / XL58 - 62 cm22.9 - 24.5

 

Helmet sizing is determined by the distance around your head in centimeters.  Measure the circumference of your head just above your eyebrows to determine your correct helmet size.