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Bell Sidetrack II Youth Bike Helmet
Measure the head
Bell prints the Sidetrack II’s chart on its product page, by head circumference in centimetres and inches.
Units
Hoot · Sizing Guide
How to measure
You can find your child's helmet size by measuring their head circumference, utilizing a flexible measuring tape or a piece of string for this task. If opting for a measuring tape, encircle your head approximately an inch above their eyebrows, then consult our size chart to identify your size.

