*This is the table for the measurements of helmets, for almost all helmets this table is equal, you can still consult a brand specifically by choosing it in the list below.
Measuring the circumference is an important step for choosing your helmet a incorrect size would result in a helmet or too wide or too tight and this would result in a reduction of driving comfort.
The measurement should be done using a centimetre and positioning it as in the photo around its head.
| Head circumference in CM | 49-50 | 51-52 | 53-54 | 55-56 | 57 | 57-58 | 58 | 59-60 | 61-62 | 63-64 | 65-66 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size helmet | xxx | xxx | x | s | ms | m | ml | i | xl | xxx | xxxl |
X-lite 
AGV 
Nolan 
Grex 
Airoh 
Caberg