Get startedAre helmet sizes standard across brands?
Quick answer
No — sizes vary between brands and sometimes between models from the same maker because shell shapes and liner thicknesses differ.
In-depth explanation
No — sizes vary between brands and sometimes between models from the same maker because shell shapes and liner thicknesses differ. Always consult the brand’s specific sizing chart and try helmets on when possible. Note the shell size range too; two different models in the same nominal size might feel different. Keep a measuring tape handy and compare measurements rather than relying solely on 'M' or 'L' labels.
Key takeaways
- No — sizes vary between brands and sometimes between models from the same maker because shell shapes and liner thicknesses differ.
- Always consult the brand’s specific sizing chart and try helmets on when possible.
- Note the shell size range too; two different models in the same nominal size might feel different.