Socks

Some of our best fitting, most advanced run socks yet—we've packed years of testing, prototypes, and running smarts into these ZQ-Certified Merino...

Some of our best fitting, most advanced run socks yet—we've packed years of testing, prototypes, and running smarts into these ZQ-Certified Merino...

Say goodbye to boring, run-of-the-mill running socks. We've brought our 360-degree printing technology to our race-day-worthy run socks to give yo...

Our best fitting, most advanced run socks yet, we packed years of testing, prototypes and running smarts into these socks. Featuring Targeted cushi...

Our best fitting, most advanced run socks yet, we packed years of testing, prototypes and running smarts into these socks. Featuring Targeted cushi...

Sure, training runs are supposed to get you out of your comfort zone, but that doesn’t mean your feet have to sacrifice. Our Run Zero Cushion Ankle...

Sure, training runs are supposed to get you out of your comfort zone, but that doesn’t mean your feet have to sacrifice. Our Run Zero Cushion Ankle...

With all of the features that the PhD® Run Ultra Light Micro offers, your newest technology may be in your sock drawer. Indestructawool™ technology...

With all of the features that the PhD® Run Ultra Light Micro offers, your newest technology may be in your sock drawer. Indestructawool™ technology...

We partnered with ultrarunner Rob Krar to design a sock purpose-built for long runs. With the 4 Degree™ elite fit system helping to ensure a perfor...

Hike how you like in our responsibly sourced, ZQ-certified Merino wool Hike Light socks. Formerly known as PhD® Outdoor, these hiking socks are pa...

The approach is sometimes the hardest part of the climb, but the PhD® Pro Approach Crew makes it easier with features that make every step more co...

The approach is sometimes the hardest part of the climb, but the PhD® Pro Approach Crew makes it easier with features that make every step more co...

Featuring Light Elite cushioning, these socks contain targeted cushioning placed only where runners need it most, on the ball and heel of the foot....

Our PhD® Run Light Elite Pattern Crew socks were designed to pair perfectly with your precise-fitting running shoes. Featuring our targeted ...

It’s time to take “burr” out of your running vocabulary. Stride out in our PhD® Run Cold Weather Mid Crew. A Merino blend and mesh zones designed f...

Our PhD® Run Light Elite Crew socks use targeted cushioning where runners need it most: on the ball and heel of the foot. We packed our most tech...

With ultra light cushioning and a low-cut build, our Run Zero Cushion Pattern Low Cut Socks are designed to pair well with your precise-fitting run...

When you hit the trails in our new PhD® Run Ultra Light Low Cut socks, the socks are the only thing that should be low. Expectations and elevations...

Featuring Light Elite cushioning, these socks contain targeted cushioning placed only where runners need it most, on the ball and heel of the foot....

Featuring Light Elite cushioning, these socks contain targeted cushioning placed only where runners need it most, on the ball and heel of the foot....

We asked pro athlete, Rob Krar, to help us create the ultimate running sock based on his experiences and insights. This purpose-built sock features...