Smartwool PhD Cycle Ultra Light Micro Socks

Size Chart

For cyclists that want maximum comfort with minimal coverage, the Smartwool PhD Cycle Ultra Light Micro sock might just be your new secret weapon. Indestructawool technology provides ultimate durability, the 4 Degree Elite fit system provides a dialed fit and the ultra-light cushioning sits perfectly in close-fitting cycling shoes. Merino wool in the SW001106 helps move moisture and regulate temperature to keep your feet comfortable even after hours in the saddle.


  • Ultra-Light Cushioned
  • Micro Height Hits at the Ankle
  • 4 Degree Fit System uses complimentary elastane bands to keep socks in place comfortably and ensure consistent fit through continuous wear
  • Mesh ventilation zones designed specifically for cyclists provide optimum temperature regulation and moisture management
  • Indestructawool technology features a patent-pending construction method for exceptional durability and comfort
  • Virtually Seamless toe
  • 1.75" overall height


46% Merino Wool, 50% Nylon, 4% Elastane

Sock Height

Micro Height Sock

Sock Cushion

Ultra Light Cushion Sock