Humphrey Law
| Size | Women's AU/UK shoe size | Men's AU/UK shoe Size | EU shoe size | Foot Length |
| Small | 3-8 | 4.5-6 | 35-41 | 22-26 cm |
| Medium/Regular | 8-11 | 7-10 | 40-45 | 25-29 cm |
| Large/King | 10-13 | 46-51 | 30-35 cm | |
| Extra Large | 13-16 | 50-55 | 36-39 cm |
| Size | Women's AU/UK shoe size | Men's AU/UK shoe Size | EU shoe size | Foot Length |
| Small | 3-8 | 4.5-6 | 35-41 | 22-26 cm |
| Medium/Regular | 8-11 | 7-10 | 40-45 | 25-29 cm |
| Large/King | 10-13 | 46-51 | 30-35 cm | |
| Extra Large | 13-16 | 50-55 | 36-39 cm |