Size popup
| USA size | UK size | Diameter (mm) |
| 5 | L | 16.0-16.3 |
| 6 | M | 16.4-16.6 |
| 7 | N | 16.9-17.1 |
| 8 | Q | 18.1-18.3 |
| 9 | S | 18.9-19.1 |
| 10 | U | 19.7-19.9 |
| 11 | W | 20.5-20.7 |
| USA size | UK size | Diameter (mm) |
| 5 | L | 16.0-16.3 |
| 6 | M | 16.4-16.6 |
| 7 | N | 16.9-17.1 |
| 8 | Q | 18.1-18.3 |
| 9 | S | 18.9-19.1 |
| 10 | U | 19.7-19.9 |
| 11 | W | 20.5-20.7 |