| Size | Average Shoe Size | |||
| Small | US: M 4-6 | W 4-6.5 | UK: 2-4.5 | EU: 34-37 |
| Medium | US: M 6.5-9.5 | W 7-10.5 | UK: 4.5-8.5 | EU: 37.5-43 |
| Large | US: M 10-13 | W 11-PLUS | UK: 9-12 | EU: 43-47 |
| X-Large | US: M 13.5-15 | --- | UK: 12.5-PLUS | EU: 48-PLUS |
| Size | Arch Circumference |
|
Small |
5-8 in | 13-20 cm |
|
Medium |
7-10 in | 18-25 cm |
|
Large |
9-13 in | 23-33 cm |
| X-Large | 11-15 in | 28-38 cm |