Smartwool Womens PhD Outdoor Ultra Light Micro Socks

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Size Chart
Medium Gray
Deep Navy
Black Heather

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When you've got miles to cover but want the minimum between Smartwool's foot and boot, the Women's PhD Outdoor Ultra Light Micro is ready to go. Built with Smartwool's new Shred Shield technology for reduced wear from toes, Smartwool's 4 Degree elite fit system for a more dialed-in fit, and activity-specific mesh zones for additional breathability, this sock was made for the trail.


  • Women's
  • Ultra-Light Cushion
  • Micro Height
  • Indestructawool technology for enhanced durability
  • 4 Degree elite fit system for a dialed, performance-oriented fit
  • Shred Shield technology reduces wear from toes
  • Body-mapped mesh zones for added breathability
  • Virtually Seamless toe for enhanced comfort
  • Women's specific fit; narrower heel and slimmer fit


50% Merino Wool 49% Nylon 1% Elastane

Sock Height

Micro Height Sock

Sock Cushion

Ultra Light Cushion Sock