| Size | Small (S) | Medium (M) | Medium-Large (ML) | Large (L) | Large-Large (LL) | X-Large (XL) | 2X-Large (XXL) |
| US Male Shoe Size | 5 - 6 | 7 - 8 | 8 - 9 | 9 - 10 | 10 - 11 | 11 - 12 | 13 - 15 |
| US Female Shoe Size | 6 - 7 | 8 - 9 | 9 - 10 | 10 - 11 | 11 - 12 | 12 - 13 | 14 - 16 |
| Euro Shoe Size | 37.5 - 39 | 40 - 41 | 41 - 42.5 | 42.5 - 44 | 44 - 45 | 45 - 46.5 | 46.5 - 50 |
Color swatch on bottom of fin indicates respective size: Small (Blue), Medium (Green), Medium-Large (Purple), Large (Red), Large-Large (Gray), XL (Black), XXL (Pink).
The Edge fins are designed with a slightly narrow foot pocket to ensure a secure and comfortable fit. Users with a wide or long arched foot may prefer to size up.
Example: USA Men's size 10-11 (LL) foot that is wide (D & up) or has a long arch may want to size up to the USA Men's size 11-12 (XL).