SIZING & FIT
| MM | Inches | US | UK | EU |
| 15mm | 0.59 | 4.5 | A | 47 |
| 15.5mm | 0.61 | 5 | A.5 | 48 |
| 16mm | 0.63 | 5.5 | B | 49 |
| 16.5mm | 0.65 | 6 | B.5 | 50 |
| 17mm | 0.67 | 6.5 | C | 51 |
| 17.5mm | 0.69 | 7 | C.5 | 52 |
| 18mm | 0.71 | 7.5 | D | 53 |
| 18.5mm | 0.73 | 8 | D.5 | 54 |
| 19mm | 0.75 | 8.5 | E | 55 |
| 19.5mm | 0.77 | 9 | E.5 | 56 |
| 20mm | 0.79 | 9.5 | F | 57 |
| 20.5mm | 0.81 | 10 | F.5 | 58 |
| 21mm | 0.83 | 10.5 | G | 59 |