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Our Hike Full Cushion Crew socks, formerly PhD® Outdoor, use cushioning on the entire sock to help maximize warmth and protection.
These responsibly sourced, ZQ-certified Merino wool hike socks are built with our top sock tech, including Indestructawool™ technology for enhanced durability, our 4 Degree™ Elite Fit System for a dialed-in, performance-oriented fit, and our Virtually Seamless™ toe for maximum in-shoe/boot comfort. We've updated our hike line by improving mesh zones for additional breathability, as well as creating a new ply structure that reduces pilling while enhancing hand-feel and comfort. Not to mention, our best-feeling, best-fitting hiking socks are now made with recycled nylon—making these socks more sustainable than ever. Now that's something you can feel good in and about.
Size | US Men |
US Women | Euro | UK |
Small | 3–5.5 | 4–6.5 | 34–37 | 2–4.5 |
Medium | 6–8.5 | 7–9.5 | 38–41 | 5–7.5 |
Large | 9–11.5 | 10–12.5 | 42–45 | 8–10.5 |
XL | 12–14.5 | N/A | 46–49 | 11–13.5 |