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With dense cushion pads under the forefoot and heel for protection and comfort, medium-weight Smartwool Men's PhD Running Light Micro Socks help you go the distance. Smartwool pairs merino wool with synthetic fibers in a snug, performance shape that's also durable; merino wool naturally wicks moisture to fight blisters and resists odor build-up.


  • Silver (040)

Important Shipping Note: U.S. sales only.


  • Medium thickness, half-cushioned sock under heel and forefoot to absorb impact and increase comfort
  • 4Degree Elite Fit System combines 2 elastic types paired with wool for greater stretch that improves performance fit
  • ReliaWool Technology at High Density Impact Zones reduces shock and abrasions while increasing durability
  • Mesh zones for ventilation and comfort
  • Flat knit toe seam increases durability
  • SmartWool inside for natural moisture, temperature and odor control
  • Padded achilles tab for protection and secure fit
  • 1.75" tall low-cut


  • 71% Merino Wool / 27% Nylon / 2% Elastic

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