PhD Outdoor Hike

PhD® Outdoor Socks

When you hit the trail, the last thing on your mind is, “will your feet make it”. Summit pushes, five AM trailheads, or out hiking the storm requires more than your average Merino wool hiking socks. We’ve combined innovative technologies with the natural benefits of Merino wool, we bring you the ultimate outdoor wool socks that will make mile 22 feel more like mile 2.

Hike Sock
Indestructawool

INDESTRUCTAWOOL™ TECHNOLOGY

Our new, patent-pending Indestructawool™ technology isn’t just something we added to our performance socks, but a whole new way to build them. We’ve developed a new, more durable knitting technique for our PhD® Outdoor socks that enables you to explore a new trails, take in awe-inspiring peaks, and reach your summit, all while knowing your socks will be with you for the long haul.

4 Degree Elite Fit

4 DEGREE™ ELITE FIT

Our iconic x-patterned 4 Degree™ elite fit dials in your fit comfortably locks our socks in place, helping to prevent bunching and blisters in our Merino wool hiking socks.

PhD Sock
Hiking Socks

Hike Specific Mesh Zones

No one should tolerate swampy feet. The ventilation zones in our PhD® Outdoor socks were made to dump heat and help keep you comfortable on the trail.

Women’s Specific Fit

We don’t believe in shrinking-and-pinking our socks. Our industry-leading women’s specific fit is crafted to provide more comfort and performance for women with its narrower fit and shallower heel.

Hiking Socks
Hiking Socks

Virtually Seamless™ Toe

Our Virtually Seamless™ toe is knit to minimize blisters, hot spots, and in-shoe discomfort on your next hike.

Dialed-In Cushioning

Whether you want an extra buffer from the trail with our PhD® Outdoor Heavy Crew socks, or prefer the lightweight cushioning of our PhD® Outdoor Light Crew socks, we designed different cushioning levels to accommodate your needs.

Hiking Socks
Hiking Socks

Hike Specific Mesh Zones

No one should tolerate swampy feet. The ventilation zones in our PhD® Outdoor socks were made to dump heat and help keep you comfortable on the trail.

Hiking Socks

Women’s Specific Fit

We don’t believe in shrinking-and-pinking our socks. Our industry-leading women’s specific fit is crafted to provide more comfort and performance for women with its narrower fit and shallower heel.

Hiking Socks

Virtually Seamless™ Toe

Our Virtually Seamless™ toe is knit to minimize blisters, hot spots, and in-shoe discomfort on your next hike.

Hiking Socks

Dialed-In Cushioning

Whether you want an extra buffer from the trail with our PhD® Outdoor Heavy Crew socks, or prefer the lightweight cushioning of our PhD® Outdoor Light Crew, we designed different cushioning levels to accommodate your needs.