Size Guide
Rings
|
FR Size |
Inner diameter (mm) |
|
50 |
16 mm |
|
52 |
16.5 mm |
|
53-54 |
17 mm |
|
56-57 |
18 mm |
|
59-60 |
19 mm |
Note: Measurements may vary by 1 to 2 millimeters depending on the model. If you are between two sizes, we recommend choosing the larger size for optimal comfort.