Men’s PhD® Run Ultra Light Micro

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Men’s PhD® Run Ultra Light Micro


Item # SW148
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Product Information


SmartWool put all their smarts into these new and improved run socks that feature our 4 Degree™ elite fit system, ReliaWool™ technology for superior durability and a virtually seamless toe. Men’s-specific mesh ventilation zones provide ultimate temperature and moisture regulation where male runners need it most.

  • Virtually seamless toe
  • Achilles tab
  • 200 needle construction provides highest knit density while maintaining ultra light weight
  • Overall height:  1.5″
  • Knit in USA of Imported Yarn


  • 4-Degree™ Elite Fit System:  Bi-elastic fit bands provide faster flex and recovery throughout the foot.
  • ReliaWool™ Technology:  Patented durability construction to go more miles than your shoes.
  • Mesh Venting: Women’’s-specific mesh ventilation zones provide additional breathability and moisture management.
  • Ultra Light Cushion: Minimal cushioning for maximum next-to-foot performance without added bulk.
  • PhD®: Built for Performance in the Highest Degree

CONTENT:  54% Merino Wool, 42% Nylon, 4% Elastane


  • Machine Wash Warm Gentle Cycle.
  • Do Not Bleach.
  • Tumble Dry Low.
  • Do Not Iron.
  • Do Not Dry Clean.

What you get from SmartWool isn’t just a product;  it’s the ability to do more of what you love, in extraordinary comfort.  SmartWool combines high-performance Merino with state-of-the-art technology to create products that power you through your great adventures and keep you comfortable all along the way.  Go far. Feel good™



Made in USA, Non-Cushion


Merino Wool, Nylon