| Helmgröße | Kopfumfang (cm) |
| XS | 48–51 cm |
| S | 51–55 cm |
| Helmgröße | Kopfumfang (inch) |
| XS | 18,8"–20" |
| S | 20"–21,6" |
K2 Illusion Kinder Skihelme Größentabelle
| Helmgröße | Kopfumfang (cm) |
| XS | 48–51 cm |
| S | 51–55 cm |
| Helmgröße | Kopfumfang (inch) |
| XS | 18,8"–20" |
| S | 20"–21,6" |