Size Chart
| Japan |
Circumference (diameter) |
UK | USA |
|---|---|---|---|
| 7 |
46.8mm (14.9mm) |
H | 4 |
| 8 |
48mm (15.3mm) |
I | 4 1/2 |
| 9 |
49.3mm (15.7mm) |
J 1/2 | 5 |
| 10 |
50.6mm (16.1mm) |
K 1/2 | 5 1/2 |
| 11 |
51.9mm (16.5mm) |
L 1/2 | 6 |
| 12 |
52.5mm (16.7mm) |
M | - |
| 13 |
53.1mm (16.9mm) |
M 1/2 | 6 1/2 |
| 14 |
54.4mm (17.3mm) |
N 1/2 | 7 |
| 15 |
55.7mm (17.7mm) |
O 1/2 | 7 1/2 |
| 16 |
57mm (18.1mm) |
P 1/2 | 8 |
| 17 |
58.3mm (18.5mm) |
Q 1/2 | 8 1/2 |
| 18 |
59.5mm (19mm) |
R 1/2 | 9 |
| 19 |
60.8mm (19.4mm) |
S 1/2 | 9 1/2 |
| 20 |
62.1mm (19.8mm) |
T 1/2 | 10 |
| 21 |
62.7mm (20mm) |
U | - |
