Size Guide - Union - Block
| Men | Small | Medium | Large |
| Mondo | 23 - 26 | 25 - 28 | 28+ |
| UK | 4 - 7 | 6 - 9 | 9+ |
| US Womens | 6 - 9 | 8 - 11 | |
| US Unisex | 5 - 8 | 7 - 10 | 10+ |
| Euro | 37 - 41 | 40 - 43 | 43+ |
Size Guide - Union - Block
| Men | Small | Medium | Large |
| Mondo | 23 - 26 | 25 - 28 | 28+ |
| UK | 4 - 7 | 6 - 9 | 9+ |
| US Womens | 6 - 9 | 8 - 11 | |
| US Unisex | 5 - 8 | 7 - 10 | 10+ |
| Euro | 37 - 41 | 40 - 43 | 43+ |
