JOHA Baby sizes 0 - 12 month
| Approximate age | Child's height | Joha size |
|---|---|---|
| Premature | 40-44 cm | 40 |
| 0-1 month | 50 cm | 50 |
| 1-4 month | 56-62 cm | 60 |
| 4-9 month | 68-74 cm | 70 |
| 9-12 month | 80 cm | 80 |
JOHA Junior sizes 1 - 12 year
| Approximate age | Child's height | Joha size |
| 1-2 year | 86-92 cm | 90 |
| 3-4 year | 98-104 cm | 100 |
| 4-5 year | 110 cm | 110 |
| 6-7 year | 116-122 cm | 120 |
| 8-9 year | 128-134 cm | 130 |
| 9-10 year | 140 cm | 140 |
| 11-12 year | 146-152 cm | 150 |
JOHA hats sizes
| Approximate age | Head circumference |
|---|---|
| Premature | 34cm |
| 0-1 month | 37cm |
| 1-4 month | 41cm |
| 4-9 month | 45cm |
| 9-12 month | 48cm |
| 1-2 year | 50cm |
| 3-5 year | 52cm |
| 6-9 year | 54 cm |
| 9-12 year | 56 cm |