| Men's Sock Size | Men | Women | Euro |
|---|---|---|---|
| Medium | 8-9.5 | 10-11.5 | 41-42 |
| Large | 10-12 | 12-14 | 43-45 |
| X-Large | 12.5-14-.5 | 14.5-16 | 45-47 |
| XX-Large | 15-17 | 16.5-18.5 | 48-50 |
All Wide Open socks stretch up to a 4E width.
| Men's Sock Size | Men | Women | Euro |
|---|---|---|---|
| Medium | 8-9.5 | 10-11.5 | 41-42 |
| Large | 10-12 | 12-14 | 43-45 |
| X-Large | 12.5-14-.5 | 14.5-16 | 45-47 |
| XX-Large | 15-17 | 16.5-18.5 | 48-50 |
All Wide Open socks stretch up to a 4E width.