Fitting must be done by a physician, so you must know your proper size and type.
Size Dimension
6 (FS06) 57 mm or 2.24"
8 (FS08) 64 mm or 2.52"
10 (FS10) 70 mm or 2.75"
12 (FS12) 76 mm or 2.99"
~~~Please make sure you know your correct size before placing an order.~~