Smartwool's 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.

4 Degree Elite Fit System

For a dialed, performance-oriented fit with flex zone at ankle joint

Full Cushion

Cushioning on the entire sock for added protection and warmth.

Indestructawool

Indestructawool technology features a patent-pending construction method for exceptional durability and comfort

Virtually Seamless Toe

Smoothed out toe seams for ultimate in-shoe fit and comfort

Features