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Giro Youth Bike Helmets
Measure the head
Giro’s youth bike-helmet chart prints a head-circumference range for each size. The ranges overlap as printed, so every size that fits is shown.
Giro prints this chart in centimetres only, so enter the measurement in centimetres.
Hoot · Sizing Guide
How to measure
Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide.