| Size | Numeric Size (in.) | Head Size (in.) | Head Size (cm.) |
| S/M | 6 3/4 - 7 1/8 | 21 1/4 - 22 3/8 | 54 - 57 |
| M/L | 7 - 7 3/8 | 22 - 23 1/8 | 56 - 59 |
| L/XL | 7 1/4 - 7 5/8 | 22 3/4 - 23 7/8 | 58 - 61 |
| One Size Fits Most - Men | 6 3/4 - 7 5/8 | 21 1/4 - 23 7/8 | 54 - 61 |
| One Size Fits Most - Women | 6 3/4 - 7 3/8 | 21 1/4 - 23 1/8 | 54 - 59 |