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Get More Out of Every Mile

Powered by natural fibers and performance-focused design, our Merino wool running socks and apparel are designed to help you run more. More trails. More marathons. More everywhere.

The Ultimate Endurance Run Sock

The PhD® Pro Endurance was designed, built, and tested with top ultrarunner Rob Krar. We’ve fused his insights with our performance innovations to bring you an elite sock that features highly specified cushioning, unwavering fit, and premium materials in order to crush long distance runs.

    FEATURES
  • Malleolus ankle and Achilles heel cushion designed for protection on rugged trails
  • Shred Shield™ technology significantly reduces wear from toenails
  • Indestructawool™ technology adds durability for enduring performance
  • 4 Degree™ Elite Fit System for a dialed, performance-oriented fit
SHOP MEN'S SHOP WOMEN'S
Revolutionary Running Socks

We’re combining natural performance and groundbreaking design to enhance your entire running experience. Our PhD® socks are built with our 4 Degree™ Elite Fit System for a locked-in fit, while Merino wool naturally helps your feet stay dry and sweat-free.

    FEATURES
  • Indestructawool™ technology adds durability for enduring performance
  • 4 Degree™ Elite Fit System for a dialed, performance-oriented fit
  • Shred Shield™ technology in Ultra Light styles significantly reduces wear from toenails
SHOP MEN'S RUN SOCKS SHOP WOMEN'S RUN SOCKS
Run-Ready Apparel

Our Merino Sport gear features recycled materials, an athletic design, and natural fiber blends for quicker dry times to help you rack up more miles. With mesh zones in key areas to enhance breathability and comfort, this apparel is designed to help you run morewith less distractions.

    FEATURES
  • Mesh zones in key areas to aid breathability
  • Merino strategically placed for temperature regulation and odor control
  • Polyester for durability and faster dry times
SHOP MEN'S RUN APPAREL SHOP WOMEN'S RUN APPAREL
The Gold Standard
of Merino Wool

Our ZQ-Certified Merino wool is responsibly sourced with the highest standards of animal welfare, social responsibility, and fiber quality in mind.

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