Smartwool PhD Running Graduated Compression Ultra Light Socks

Size Chart

We are very excited to offer Compression Technology to our customers. Smartwool's SW127 PhD Running Graduated Compression Ultra-Light socks are built with cutting-edge, graduated compression technology and have all of the natural benefits of Merino Wool. Smartwool's SW127 Compression Sock is extremely light-weight for those who want a minimalist, yet hard-working sock. If you prefer a small amount of cushion on your compression sock, we recommend the SW057 (PhD Graduated Compress Light Sock). Both the SW127 and SW057 Graduated Compression wool socks improve recovery time by pushing blood from your lower extremities, back to your heart faster. The SW127 and SW057 have been proven to reduce fatigue, speed-up recovery, and aid sore muscles.


  • Ultra-Lite construction
  • Not Cushioned
  • 20-30 mmHg graduated compression rating
  • Graduated compression helps speed recovery
  • Smartwool inside for moisture, temperature, and odor control
  • Over-the-Calf Height (14" overall height)
  • Virtually Seamless Toe
  • Washer and Dryer Friendly
  • Replaces the SW056


43% Merino Wool, 46% Nylon, 11% Elastane

Sock Height

Knee-High Height Sock

Sock Cushion

No Cushion Sock