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Helmet Size Guide

Buying a helmet online is easy - you only need to know the circumference of your head. Follow the instructions below to measure for your size. Each bicycle helmet manufacturer has their own interpretation of helmet sizes, but they are all based off the circumference of your head. After you have measured your head check the helmet size guide below to help you choose the right fit.

How to Measure Your Head for Size

The best ways to measure your head are with a soft tape measure or a piece of string and a tape measure.

  1. Wrap the string or soft tape measure around the circumference of your head, above your eyebrows and take the measurement.
  2. If you are using string after measuring hold the string straight and flat next to the tape measure to get an accurate measurement.

Adults Helmet Size Guide Chart

All sizing in cm. Please use this chart as a guide only. Sizing/fit on individual helmets can vary - please check product description. Guide does not guarantee a perfect fit.

Kids Helmet Size Guide Chart

All sizing in cm. Please use this chart as a guide only. Sizing/fit on individual helmets can vary - please check product description. Guide does not guarantee a perfect fit.