| Brand Size | UK Size | U.S. Size | Age (in years) |
|---|---|---|---|
| 3 - 4 | 3 - 4 | 3 - 4 | 1 |
| 5 - 6 | 5 - 6 | 5 - 6 | 2 |
| 7 - 8 | 7 - 8 | 7 - 8 | 3 |
| 9 - 10 | 9 - 10 | 9 - 10 | 4 |
| 10 - 11 | 10 - 11 | 10 - 11 | 5 |
| 11 - 12 | 11 - 12 | 11 - 12 | 6 |
| 12 - 13 | 12 - 13 | 12 - 13 | 7 |
| 1 - 2 | 1 - 2 | 1 - 2 | 8 - 9 |
| 3 - 4 J | 3 - 4 J | 3 - 4 J | 10 - 11 |