Charte des grandeurs - Chapeaux
| Âge | Tour de tête (cm) | Tour de tête (in) |
| 1M | 40 cm | 15,6" |
| 3M | 42 cm | 16,4" |
| 6M | 44 cm | 17,2" |
| 9M | 46 cm | 17,9" |
| 12M | 48 cm | 18,7" |
| 18M | 50 cm | 19,5" |
| 2A | 50 cm | 19,5" |
| 3A | 52 cm | 20,3" |
| 4A | 52 cm | 20,3" |
| 5A | 52 cm | 20,3" |
| 6A | 52 cm | 20,3" |
| 8A | 54 cm | 21,1" |
| 10A | 54 cm | 21,1" |
| 12A | 56 cm | 21,8" |