Size Guide
| Diameter (in mm) |
Circumference (in mm) |
US | UK | EUR |
| 14.05 | 44.14 | 3 | F | 44 |
| 14.86 | 46.68 | 4 | H 1/2 | - |
| 15.70 | 49.32 | 5 | J 1/2 | - |
| 16.51 | 51.87 | 6 | M | 52 3/4 |
| 17.35 | 54.51 | 7 | O | 55 1/4 |
| 18.19 | 57.15 | 8 | Q | 57 3/4 |
| 18.89 | 59.34 | 9 | R 3/4 | - |
| 19.84 | 62.33 | 10 | T 1/2 | - |
| 20.68 | 64.97 | 11 | V 1/2 | - |
| 21.49 | 67.51 | 12 | Y | 67 1/2 |
| 22.33 | 70.15 | 13 | Z+1 | - |
| 23.06 | 72.45 | 14 | Z+3 | - |
| 23.87 | 74.99 | 15 | Z+5 | - |