| XS | S | M | L | XL | XXL | |
| Unisex Size | 53-55 cm | 55-57 cm | 57-59 cm | 59-61 cm | 61-63 cm | 63-65* cm |
| Women's Size | 53-55 cm | 55-57 cm | 57-59 cm | 59-61 cm | - | - |
| Youth Size | - | 49-51 cm | 51-53 cm | 53-55 cm | - | - |
To Measure: Wrap measuring tape around your head, just above eyebrows. Note your size at the point of overlap.