Size Guide
| US Size | UK Size | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 4 | H | 14.9 | 46.8 |
| 5 | J | 15.7 | 49.3 |
| 6.5 | M | 16.9 | 53.1 |
| 8 | P | 18.2 | 56.9 |
| 9.5 | S | 19.1 | 60.8 |
| 10.5 | U | 20.2 | 63.3 |
| US Size | UK Size | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 4 | H | 14.9 | 46.8 |
| 5 | J | 15.7 | 49.3 |
| 6.5 | M | 16.9 | 53.1 |
| 8 | P | 18.2 | 56.9 |
| 9.5 | S | 19.1 | 60.8 |
| 10.5 | U | 20.2 | 63.3 |