Reef
Children's Footwear
| UK | US | EU |
| 2/3 | 3/4 | 19/20 |
| 4/5 | 5/6 | 21/22 |
| 6/7 | 7/8 | 23/24 |
| 8/9 | 9/10 | 25/26 |
| 10/11 | 11/12 | 29/30 |
| 12/13 | 13/1 | 31/32 |
| 1/2 | 2/3 | 33/34 |
| 3/4 | 4/5 | 35/36 |
| 5/6 | 6/7 | 37/38 |
Reef
Children's Footwear
| UK | US | EU |
| 2/3 | 3/4 | 19/20 |
| 4/5 | 5/6 | 21/22 |
| 6/7 | 7/8 | 23/24 |
| 8/9 | 9/10 | 25/26 |
| 10/11 | 11/12 | 29/30 |
| 12/13 | 13/1 | 31/32 |
| 1/2 | 2/3 | 33/34 |
| 3/4 | 4/5 | 35/36 |
| 5/6 | 6/7 | 37/38 |