Unisex

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...

When it comes to running socks, we pull out all the stops to keep making improvements on our products. With brand-new Shred Shield™ technology to help improve wear in the toe box, our PhD® Run Ultra Light Micro socks feature the 4 Degree™ elite fit...

An ankle-high powerhouse, the PhD® Outdoor Light Mini is made for mileage. Great for long summer treks, it combines support, stretch, and recovery. Featuring Indestructawool™ technology for ultimate durability and the 4 Degree™ elite fit system for a...

An arch brace holds the sock in place and adds additional support, while a flat-knit toe seam keeps you comfortable throughout the day. Perfect for moderate hiking or aggressive walking.

Our best fitting, most advanced run socks yet, we packed years of testing, prototypes and running smarts into these socks. Featuring Light Elite cushioning in the ball and heel of the foot for ultimate shock absorption with minimal in-shoe volume,...

The PhD Outdoor Light micro is made for the trail. Featuring Indestructawool technology for ultimate durability, we've designed these socks to outlast your greatest adventures. And with features like mesh zones for maximum breathability, a Virtually...

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 our new Shred Shield™ technology for reduced wear from toes, 4 Degree™ elite fit system...

For the vertically inclined, the PhD® Pro Approach Mini combines carefully designed comforts with rugged purpose. Made with insights from iconic alpinist Conrad Anker, these socks feature specified cushioning to help protect feet from footwear friction,...

We worked with athlete Rob Krar to create the ultimate ultra-run sock. This purpose-built sock features Shred Shield™ technology to reduce wear from toes, activity-specific minimal and targeted sole cushioning, and a new malleolus ankle cushion designed...

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...

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...

When you're out there, the last thing you want to think about is your feet. That's why we made the PhD Pro Medium Crew with...

For the vertically inclined, the PhD® Pro Approach Crew combines carefully designed comforts with rugged purpose. Made with insights from iconic alpinist Conrad Anker, these socks feature specified cushioning to help protect feet from footwear friction,...

We teamed up with Smartwool athlete and ultrarunner Rob Krar to make a sock that can handle the longest trail runs. Introducing our PhD® Pro Endurance Krar Print Crew. This running sock features Indestructawool™ technology for enhanced durability, our...

Light, comfortable, and made to prevent tightness, this sock is made for your longest travels. Whatever you're up to, these socks are designed to provide you with all-day comfort.

Our Hike Light Park Explorer Pattern crew is made for days spent in nature. Our light cushioning and a flat knit toe seam keep things comfy, while an elasticized arch brace provides a secure fit. Enjoy your favorite local and National Parks with the help...

No Show socks typically don't have this much soft cushioning, but that's just another way that Smartwool is revolutionizing the sock industry. Our Men's Sneaker Cushion No Show features increased foot coverage for in-sneaker comfort while perfectly...

The Men's Sneaker No Show offers increased foot coverage for all day comfort. It's built with Shred Shield™ technology to reduce wear from toes, a Virtually Seamless™ toe for enhanced comfort, and an internal gripper to ensure your sock doesn't slip or...

This all-purpose hiking sock was designed for rugged day hikes or moderate backpacking. An arch brace holds the sock in place and adds additional support and a flat-knit toe seam matched with our responsibly-sourced Merino wool helps keeps you...

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...