Hiking & Backpacking

With classic styling, ample cushioning, and a supportive fit, our Jitterbug Crew has impressive range. Whether you’re at the office, walking a riverbank, or out on the dance floor, give your feet the youthful, nostalgic glow they deserve.

The Hike Light Striped Crew offers the same secure fit and comfort level as the original, but with a salute to stripes. This men's hiking sock brings you the durability you need for long hikes paired with the benefits of responsibly-sourced Merino wool—helping regulate body temperature while staying itch- and stink-free.

This ultra-light, non-cushioned sock provides a close, lightweight fit that acts as your second skin to minimize friction and blisters. The flat knit toe seam guarantees comfort.

This all-purpose sock was designed for rugged day hikes or moderate backpacking. An arch brace holds the sock in place and adds additional support. A flat-knit toe seam keeps you comfortable.

Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool™ technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless® toe, and the 4 Degree™ elite fit system, these responsibly sourced Merino wool socks have comfort covered.

Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool™ technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless® toe, and the 4 Degree™ elite fit system, these responsibly sourced Merino wool socks have comfort covered.

An ankle-high powerhouse, the PhD® Outdoor Light Micro is made for mileage. Great for long summer treks, our lightweight, best-fitting hiking sock combines support, stretch, and recovery. Featuring Indestructawool™ technology for ultimate durability and the 4 Degree® elite fit system for a dialed fit. Light cushioning offers impact protection on the road or trail, while the Virtually Seamless™ toe offers more comfort in a trail shoe.

Searching for a versatile wool sock that has it all? Look no further: the PhD® Outdoor Medium Crew offers fit, comfort and durability wrapped together in one smart sock. It features Indestructawool™ technology for ultimate durability in high wear areas, our 4 Degree™ elite fit system for a dialed fit, and our signature Virtually Seamless™ toe for extraordinary comfort in any trail shoe. Plus, the medium cushioning provides impact protection and ultimate comfort on the trail—making our PhD® Outdoor socks some of our best-fitting and most comfortable.

Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool™ technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless® toe and the 4 Degree® elite fit system, these socks have comfort covered.

For a sock that has it all, look no further: the PhD® Outdoor Medium Crew offers fit, comfort and durability wrapped together in one smart sock. Featuring Indestructawool™ technology for ultimate durability in high wear areas, the 4 Degree® elite fit system for a dialed fit and our signature Virtually Seamless™ toe for extraordinary comfort in any trail shoe. Medium cushioning provides impact protection and ultimate comfort on the trail.

When you 've got lots of miles to cover but only want the minimum between your foot and boot, the PhD® Outdoor Ultra Light Crew is the perfect trail companion. With the new Shred Shield™ technology for reduced wear from toes, 4 Degree™ elite fit system for a more dialed-in fit, and activity-specific mesh zones for additional breathability, this sock was built for mile after mile of trail.

When you 've got lots of miles to cover but only want the minimum between your foot and boot, the PhD® Outdoor Ultra Light Crew is the perfect trail companion. With the new Shred Shield™ technology for reduced wear from toes, 4 Degree™ elite fit system for a more dialed-in fit, and activity-specific mesh zones for additional breathability, this sock was built for mile after mile of trail.

When you 've got lots of miles to cover but only want the minimum between your foot and boot, the PhD® Outdoor Ultra Light Mini is the perfect trail companion. With the new Shred Shield™ technology for reduced wear from toes, 4 Degree™ elite fit system for a more dialed-in fit, and activity-specific mesh zones for additional breathability, this sock was built for mile after mile of trail.

When you're out there, the last thing you want to think about is your feet. That's why we made the PhD® Pro Light Crew with Indestructawool™ technology, a 4 Degree™ elite fit system, and body mapped mesh vents for breathability. So you can escape without distractions and feel supported wherever your feet take you. Get out there and explore.

For the day hiker looking for a little more coverage, this hiking sock adds a small amount of cushion. An open, mesh fabric and two types of rib offer enhanced breathability and a perfect fit. Inspired by today's ultra-light hiking shoes, this responsibly sourced Merino wool sock will help change your hikes for the better.