Hiking & Trekking Socks
| Sock Size |
US Women Shoe Size |
US Men Shoe Size |
Foot Length (in) |
Calf Fit (in) |
| S |
5–7 |
4–6 |
8.7–9.4 |
11.0–12.5 |
| M |
8–10 |
7–9 |
9.5–10.4 |
12.5–14.0 |
| L |
11–13 |
10–12 |
10.5–11.4 |
14.0–15.5 |
| XL |
14+ |
13–15 |
11.5–12.3 |
15.5–17.0 |
Running & Athletic Sports Socks
| Sock Size |
US Women Shoe Size |
US Men Shoe Size |
Foot Length (in) |
Stretch Arch Fit |
| S |
5–7.5 |
4–6.5 |
8.8–9.5 |
Standard Narrow |
| M |
8–10.5 |
7–9.5 |
9.6–10.5 |
Regular Fit |
| L |
11–13.5 |
10–12.5 |
10.6–11.6 |
Wide Fit |
| XL |
14+ |
13–16 |
11.7–12.6 |
Extra Wide Fit |
Ski & Snowboard Thermal Socks
| Sock Size |
US Women Boot Size |
US Men Boot Size |
Foot Length (in) |
Calf Height Fit (in) |
| S |
5–7 |
4–6 |
8.6–9.3 |
12.0–13.0 |
| M |
8–10 |
7–9 |
9.4–10.3 |
13.0–14.5 |
| L |
11–13 |
10–12 |
10.4–11.3 |
14.5–16.0 |
| XL |
14+ |
13–15 |
11.4–12.2 |
16.0–17.5 |
Workwear, Casual & Limited Edition Socks
| Sock Size |
US Women Shoe Size |
US Men Shoe Size |
Foot Length (in) |
Elastic Stretch Range |
| S |
5–8 |
4–7 |
8.7–9.6 |
Light Stretch |
| M |
9–11 |
8–10 |
9.7–10.6 |
Medium Stretch |
| L |
12–14 |
11–13 |
10.7–11.8 |
High Stretch |
| XL |
14+ |
14–17 |
11.9–12.8 |
Extra High Stretch |
* All measurements are in inches. Measure bare foot from heel to longest toe for accurate sizing.
* If your foot size falls between two sizes, size up for thicker padded & thermal socks.
* Ski, hiking and work socks feature extra cushioning; lightweight running socks have slim stretch fit.
* Limited edition casual socks maintain standard elastic stretch for all-day daily wear.
