Size Guide
Find Your Perfect Fit
PRFM® socks are unisex and available in four sizes. Use the chart below to find your size based on your shoe size.
Size Chart
| Size | US | EU | UK | JP |
|---|---|---|---|---|
| S | 5 – 7 | 35 – 38 | 4 – 6.5 | 21 – 23 |
| M | 7 – 9 | 39 – 42 | 7 – 8.5 | 23 – 25 |
| L | 9 – 11 | 43 – 46 | 9 – 11 | 25 – 27 |
| XL | 11 – 13 | 47 – 50 | 11.5 – 14.5 | 27 – 29 |
Fit Tips
- If you are between sizes, we recommend sizing up for a more comfortable fit.
- All PRFM® socks feature left/right anatomical construction for a precision fit.