Need help choosing the right shape and size helmet for your own noggin?
Learn about the LidPicker!
We’ll help you find the right fit!
Adult Helmets Size | Inches | Hat Size | CM |
---|---|---|---|
X-Small | 20 1/2 – 21 1/4 | 6 5/8 – 6 3/4 | 53 – 54 |
Small | 21 1/4 – 22 | 6 7/8 – 7 | 54 – 56 |
Medium | 22 – 23 | 7 1/8 – 7 1/4 | 57 – 58 |
Large | 23 – 23 3/4 | 7 3/8 – 7 1/2 | 59 – 60 |
X-Large | 24 – 24 1/2 | 7 5/8 – 7 3/4 | 61 – 62 |
2X-Large | 24 1/2 – 25 1/4 | 7 7/8 – 8 | 63 – 64 |