Helmet Sizing Tips
1. You should start by wrapping a measuring tape around your head about a 1.2cm (half an inch) above your eyebrows.
2. Since a helmet should be snug so it doesn't come off in the event of an accident, you need to pull the tape comfortably tight in order to ensure the best results.
3. Make sure you get precise results by measuring a few times trying to get the same result every time. If you get different measurements take the largest one.
Suomy Sizing Chart
Child Sizes: S - 47-48, M 49-50, L 51-52, XL 53-54