Smartwool PhD Run Ultra Men's Light Mid Crew


Item #: 331702162

We put all of our smarts into these new and improved run socks that feature our 4Degree® 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. Mid Crew height offers more protection from debris on the road or trail.

NOTE: Find in Store Inventory levels are continuously changing. Please contact store to confirm availability is as shown.


  • 4 Degree™ elite fit system uses two elastics for greater stretch and recovery. Run-specific fit.
  • Patent pending ReliaWool™ technology in high impact areas provides longer lasting protection to keep feet comfortable
  • Mesh ventilation zones designed specifically for male runners provide optimum temperature regulation and moisture management
  • Virtually seamless toe
  • 6" overall height
  • 200 needle construction provides high-density cushioning while maintaining light weight


  • 51% Merino Wool 45% Nylon 4% Elastane

Shipping Info:

  • Leaves the warehouse in 1-7 business days depending on order volume.
  • Items may be returned within 60 days of the order date to an Atmosphere retail store or an Atmosphere warehouse. Items must be returned unused/unworn and electronics unopened. See Online Return Policy and Return Instructions for more information.
  • Note: Shipping restrictions may apply based on location and product size.


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