JOULES Baby sizes 3 - 24 month
| Approximate age | Child's height |
| 0-3 month | 62 cm |
| 3-6 month | 68 cm |
| 6-9 month | 74 cm |
| 12-18 month | 80 cm |
| 18-24 month | 86 cm |
JOULES Junior sizes 2 - 12 year
| Approximate age | Child's height | Child's chest (around) | Child's waist (around) |
| 2 year | 92 cm | 52 cm | 51 cm |
| 3 year | 98 cm | 55 cm | 52 cm |
| 4 year | 104 cm | 57 cm | 54 cm |
| 5 year | 110 cm | 59 cm | 56 cm |
| 6 year | 116 cm | 61 cm | 58 cm |
| 7-8 year | 122-128 cm | 63-67 cm | 58-60 cm |
| 9-10 year | 134-140 cm | 70-73 cm | 62-64 cm |
| 11-12 year | 146-152 cm | 76-79 cm | 66-68 cm |
JOULES Rain Shoe Sizes
 UK |  EU |  USA |
| 4 | 21 | 5 |
| 5 | 22 | 6 |
| 6 | 23 | 7 |
| 7 | 24 | 8 |
| 8 | 25 | 9 |
| 9 | 27 | 10 |
| 10 | 28 | 11 |
| 11 | 30 | 12 |
| 12 | 31 | 13 |
| 13 | 32 | 1 |
| 1 | 33 | 2 |
| 2 | 34 | 3 |
| 3 | 36 | 4 |