SIZE CHART
Running Socks
| Sock size | US men's shoe size |
US women's shoe size |
| X-small | 5-6 | |
| Small | 6-7 | 6.5-8 |
| Medium | 7.5-9 | 8.5-10 |
| Large | 9.5-11.5 |
10.5-12.5 |
| X-large | 12-14 | 13+ |
Compression Running Socks
| Sock size | US men's shoe size |
US women's shoe size |
| Small | 6-7 | 5-7.5 |
| Medium | 7.5-9 | 8-9.5 |
| Large | 9.5-11 | 10-12 |
| X-large | 11.5-13 | 12.5+ |
Ultralight Running Socks
| Sock size | US men's shoe size |
US women's shoe size |
| Small | 6-7 | 6-7.5 |
| Medium | 7.5-9 | 8-9.5 |
| Large | 9.5-11 | 10-12 |
| X-large | 11.5-13.5+ | 12.5+ |
Performance Compression Running Socks
| Sock size | US men's shoe size |
US women's shoe size |
| Small | 5-6 | 5-7 |
| Medium | 6.5-8.5 | 7.5-9.5 |
| Large | 9-11 | 10-12.5 |
| X-large | 11.5-13.5 | 13+ |
Cycling Socks
| Sock size | US men's shoe size |
US women's shoe size |
| Small | 4-7 | 5-8 |
| Medium | 6-9 | 7-10 |
| Large | 8-11 | 9-12 |
| X-large | 10-14 | 12+ |
Elite Compression Socks
| Size | Measure calf circumference | US men's shoe size |
US women's shoe size |
| S/M | 9-14 inches | 6-9.5 | 7-10.5 |
| L/XL | 13-17 inches | 9-13 | 11-14 |
| XXL | 16-19 inches | 12-14 | 13-15+ |
Ankle Compression Sleeves
| Size | Front arch circumference | US men's shoe size |
US women's shoe size |
| S | 5-7 inches | 4-6 | 4-7 |
| M | 7-9 inches | 6-9 | 7-10.5 |
| L | 9-11 inches | 9-11.5 | 11-13 |
| XL | 11-13 inches | 12-14 | 13-16 |
Compression Sleeves
| Sock size | Upper calf thickness |
| S | 12.5-14.5 inches |
| M | 14.75-16.75 inches |
| L | 17-19 inches |
Men's No Show & Women's No Show
| Sock size | US men's shoe size |
US women's shoe size |
| S/M | 7.5-10 | One size (6-9) |
| M/L | 10-12 |
Heavy & Light Hiking Socks
| Sock size | US men's shoe size |
US women's shoe size |
| Small | 4.5-6.5 | 5-7 |
| Medium | 7-9 | 7.5-9.5 |
| Large | 9.5-11 | 10-12 |
| X-large | 11.5-13 | 12.5-14.5 |