Smartwool PF Hike Full Cushion Crew Socks (Unisex)
Smartwool was created with the belief that time outside is valuable, restorative, and essential for everyone.When the company was founded back in 1994, the founders simply wanted to be able to ski longer without getting cold toes.
That’s when they discovered the benefits of Merino wool as a performance fabric. It was soft (softer than any wool they had ever felt), moisture-wicking, thermoregulating (warm when it’s cold, and cool when it’s warm), sustainable, and odor-neutralizing—helping to keep feet dry, comfortable, and warm for longer than the synthetic socks they were wearing at the time.
Smartwool was the first outdoor company to make performance Merino wool ski socks—revolutionizing the category and forever changing the way outdoor enthusiasts viewed their feet.

Smartwool PF Hike Full Cushion Crew Socks (Unisex)
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.
- Sock Height: Crew
- 4 Degree™ elite fit system for a dialed-in, performance-oriented fit
- Additional body-mapped mesh zones for added breathability
- Virtually Seamless™ toe for enhanced comfort
- Indestructawool™ technology with extended durability zones
- Comfort welt with 'stay put' fit
- Height 8"
- Made in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane
- Style: SW001618001
Smartwool PF Hike Full Cushion Crew Socks (Unisex)