Smartwool Running Socks

Smartwool PhD Outdoor Ultra Light Crew Socks

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Unisex Smartwool PhD Outdoor Ultra Light Crew Socks

Unisex Accessories

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 a more dialed-in fit, and activity-specific mesh zones for additional breathability, this sock was built for mile after mile of trail.

Product Details

Benefits Include:

  • Ultra light cushion gives maximum performance in close-fitting shoes while Shred Shield helps reduce wear from toes
  • PhD is built for Performance in the Highest Degree
  • 4 Degree Elite Fit System gives a dialed, performance-oriented fit with flex zone at ankle joint
  • Indestructawool technology features a patent-pending construction method for exceptional durability and comfort


  • Style: SW001413001
  • Materials: 49% Merino Wool / 46% Nylon / 5% Elastane

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