Description
| RedBack
(UK) |
US/CAN
Men’s |
US/CAN
Woman’s |
| 3 | 4 | 5.5 |
| 3 or 4 | 4.5 | 6 |
| 4 | 5 | 6.5 |
| 4.5 | 5.5 | 7 |
| 5 | 6 | 7.5 |
| 5.5 | 6.5 | 8 |
| 6 | 7 | 8.5 |
| 6.5 | 7.5 | 9 |
| 7 | 8 | 9.5 |
| 7.5 | 8.5 | 10 |
| 8 | 9 | 10.5 |
| 8.5 | 9.5 | 11 |
| 9 | 10 | 11.5 |
| 9.5 | 10.5 | |
| 10 | 11 | |
| 10.5 | 11.5 | |
| 11 | 12 | |
| 11.5 | 12.5 | |
| 12 | 13 | |
| 13 | 14 | |
| 14 | 15 | |
| 15 | 16 |
