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Size Chart - Giro Helmets

This Giro Helmet size chart are meant to serve as a guide. We recommend trying on your helmet instore before riding to ensure the best comfort and performance. 

Adult Helmets

Size  S M L XL
Head Circumference 51-55cm 55-59cm 59-63cm 63-64cm

Adult Universal Helmets

SIZE  HEAD CIRCUMFERENCE
Universal Womens 50-57cm
UA = Universal Adult 54-61cm
XL = Universal XL 58-65cm

Kids Helmets

SIZE  HEAD CIRCUMFERENCE
XS (Scamp model) 45-49cm
S (Scamp model) 49-53cm
XS (Dime model) 47-51cm
S (Dime model) 51-55cm
Universal Child 47-54cm
Universal Youth (Ages 5+) 50-57cm

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