| Sock Size | Men's shoe size | Women's shoe size |
| Small | 6 - 8 | 6.5 - 9 |
| Medium | 8.5 - 9.5 | 9.5 - 10.5 |
| Large | 10 - 12.5 | 11+ |
| Sleeve Size | Calf Size | Height |
| X-Small/Small | 9.5 - 12.5" | 5'3" and below |
| Small/Medium | 12.5 - 15" | 5'4" - 5'10" |
| Large/X-Large | 15" and up | 5'11" and up |
When choosing a size, calf size should be used as the primary determinant. Height is listed for those who don't know their calf size.