| Size guide | ||
| Trouser | ||
| Our sizes | Length | Waist |
| 12-18 M | 17 | 16.5 |
| 18-24 M | 19 | 17 |
| 2-3 years | 21 | 18 |
| 3-4 years | 22.5 | 19.5 |
| 4-5 years | 24 | 20 |
| 5-6 years | 26 | 21 |
| 6-7 years | 28 | 22 |
| 7-8 years | 29 | 23 |
| 9-10 years | 33 | 23 |
| 11-12 years | 34.5 | 24 |
| 12-13 years | 35.5 | 25 |
| 13-14 years | 36.5 | 26 |
| 14-15 years | 38.5 | 27 |