| Men's Boot Size (US) | Women's Boot Size (US) | Euro Boot Size | UK Boot Size | Mondo Boot Size | |
| Men's Medium | 7-10 | 8+ | 39-44 | 6.5-9.5 | 25-28 |
Men's Large | 10+ | N/A | 44+ | 9.5+ | 28+ |
| Women's Boot Size (US) | Men's Boot Size (US) | Euro Boot Size | UK Boot Size | Mondo Boot Size | |
| Women's Small | 4-8 | 3-7 | 34-39 | 2.5-6.5 | 20.5-24.5 |
| Women's Medium | 8+ | 6-9 | 38-43 | 5.5-8.5 | 25 |