| Size | Infant | Infant | Infant | Small | Small/Medium | Medium | Medium/Large | Large |
| Age | 0-6 months | 6-12 months | 0-12 months | 1-3 years | 1-6 years | 3-6 years | 3-12 years | 6-12 years |
| Head Circumference | 38-44 cm | 44-47 cm | 38-47 cm | 47-50 cm | 47-53 cm | 50-53 cm | 50-56 cm | 53-56 cm |