| Size | Diameter (Inches) |
| Extra Small | 6.5 |
| Small | 7 |
| Medium | 7.5 |
| Large | 8 |
| Extra Large | 8.5 |
| Extra Extra Large | 9 |
*This guide provides general sizing information, which can vary depending on style.
| Size | Diameter (MM) |
| 5 | 15.7 |
| 6 | 16.5 |
| 7 | 17.3 |
| 8 | 18.2 |
| 9 | 18.9 |
*This guide provides general sizing information, which can vary depending on style.