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    Light Grey
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Smartwool PhD Outdoor Ultra Light Mini Socks

When you've got lots of miles to cover but only want the minimum between your foot and boot, the PhD Outdoor Ultra Light Mini 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.


  • Indestructawool technology for enhanced durability
  • 4 Degree elite fit system for a dialed, performance-oriented fit
  • Shred Shield technology reduces wear from toes
  • Mesh ventilation zones provide optimum moisture management and maximum breathability
  • Body-mapped mesh zones for added breathability
  • Virtually Seamless toe for enhanced comfort
  • Built for Performance in the Highest Degree
  • Minimal cushioning for maximum next-to-foot performance without added bulk


  • Height: 3.75" overall
  • Fabric: 48% Merino Wool, 48% Nylon, 4% Elastane
  • Care: Machine wash warm, wash inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean.
  • Style Number: SW001412

Size Chart:

Size Small Medium Large XLarge
US Men's 3-3.5 6-8.5 9-11.5 12-14.5
EU 34-37 38-41 42-45 46-49
UK 2-4.5 5-7.5 8-10.5 11-13.5
Calf Circumference 11"-14.5"(18-26.5cm) 12.5"-16.5"(32-41cm) 14.5"-18"(37-45.5cm) 16"-23"(41-58cm)