| IN Size |
Circumference (mm) |
Diameter (mm) |
| 7 | 47 | 15 |
| 8 | 48 | 15.3 |
| 9 | 49 | 15.6 |
| 10 | 50 | 15.9 |
| 11 | 51 | 16.3 |
| 12 | 52 | 16.5 |
| 13 | 53 | 16.9 |
| 14 | 54 | 17.2 |
| 15 | 55 | 17.5 |
| 16 | 56 | 17.8 |
| 17 | 57 | 18.1 |
| 18 | 58 | 18.5 |
| Size |
US Size |
Circumference (mm) |
Diameter (mm) |
| S |
4 |
47 |
15 |
| 4.5 |
48 |
15.3 |
| 4.75 |
49 |
15.6 |
| M |
5.25 |
50 |
15.9 |
| 5.75 |
51 |
16.3 |
| 6 |
52 |
16.5 |
| L |
6.25 |
53 |
16.9 |
| 6.75 |
54 |
17.2 |
| 7.25 |
55 |
17.5 |
| XL |
7.5 |
56 |
17.8 |
| 8 |
57 |
18.1 |
| 8.25 |
58 |
18.5 |
| Circumference (cm) |
Circumference (inch) |
| 15 | 6 |
| 16 | 6.3 |
| 17 | 6.7 |
| 18 | 7 |
| Circumference (inch) |
Circumference (cm) |
| 13.8 | 35 |
| 14.6 | 37 |
| 15.4 | 39 |
| 16.1 | 41 |
