| US Men's Shoe Size | Foot Length (in) | Sock Size |
|---|---|---|
| 5–7 | 9.0–9.6 | S |
| 7.5–9.5 | 9.7–10.4 | M |
| 10–12 | 10.5–11.2 | L |
| 12.5–14 | 11.3–12.0 | XL |
| US Women's Shoe Size | Foot Length (in) | Sock Size |
|---|---|---|
| 5–6.5 | 8.5–9.0 | S |
| 7–9 | 9.1–9.8 | M |
| 9.5–11 | 9.9–10.5 | L |
| 11.5–13 | 10.6–11.2 | XL |
| Sock Size | US Men's | US Women's | Foot Length (in) |
|---|---|---|---|
| S | 5–7 | 5–6.5 | 8.5–9.6 |
| M | 7.5–9.5 | 7–9 | 9.1–10.4 |
| L | 10–12 | 9.5–11 | 9.9–11.2 |
| XL | 12.5–14 | 11.5–13 | 10.6–12.0 |
* All measurements are in inches. Measure bare foot from heel to longest toe for accuracy.
* Our performance socks are stretch engineered for a snug, secure fit. If between shoe sizes, choose the larger size.
* Fit may vary slightly by sock style: no-show, quarter, crew, and plantar fasciitis support socks.
* Left / Right specific molded construction for better arch and heel lock.
Plush cushion meets breathable comfort. The Merino 10 Max Cushion Tab keeps your feet comfy, dry, and perfectly temp-regulated—no matter the forecast. A secure, custom-like feel and protected heel stay soft, so your runs, walks, and workouts can go hard.
Plush cushion meets breathable comfort. The Merino 10 Max Cushion Tab keeps your feet comfy, dry, and perfectly temp-regulated—no matter the forecast. A secure, custom-like feel and protected heel stay soft, so your runs, walks, and workouts can go hard. Merino 10
Merino wool fibers naturally regulate temperature to keep your feet dry, comfortable, and odor-free, year round.
Anatomical DesignShaped to match your feet—with a more natural toe box and right/left-specific fit that just feels better.
Targeted Arch CompressionSecure arch support and a custom-like fit that stays put.
Seamless ToeA seamless toe reduces friction where it matters most. Bye bye, blisters.
Blister TabThe unsung hero. A double-thick heel tab that cushions, protects, and helps prevent back-of-shoe friction.
Seamless HeelSeamless, fitted heel cup that won't slip, bunch, or rub.
Made in the USADesigned and produced locally in the USA.