Thorlo
| Sock Size | US Shoe Size | Euro Shoe Size | UK Shoe Size | ||
| Youth | Women | Men | |||
| S | 2 - 4 | 4 - 6 | 35 - 37 | 2.5 - 4.5 | |
| M | 6.5 - 10 | 5.5 - 8.5 | 38 - 42 | 5 - 8 | |
| L | 10.5 - 13 | 9 - 12.5 | 43 - 47 | 8.5 - 12 | |
| XL | 13 - 15 | 48 - 50 | 12.5 - 14 | ||
| Sock Size | US Shoe Size | Euro Shoe Size | UK Shoe Size | ||
| Youth | Women | Men | |||
| S | 2 - 4 | 4 - 6 | 35 - 37 | 2.5 - 4.5 | |
| M | 6.5 - 10 | 5.5 - 8.5 | 38 - 42 | 5 - 8 | |
| L | 10.5 - 13 | 9 - 12.5 | 43 - 47 | 8.5 - 12 | |
| XL | 13 - 15 | 48 - 50 | 12.5 - 14 | ||