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PhD Graduated Compression Ultra Light Sock

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A smart decision.

Make it an instant repeat with the powerful combination of performance-enhancing Merino and recovery-enhancing compression in Smartwool's PhD Graduated Compression Ultra Light Sock. Smartwool has stocked these run socks with smart features like their 4 Degreeā„¢ elite fit system, men's-specific mesh ventilation zones and a virtually seamless toe.


  • Virtually seamless toe.
  • 20-30 mmHg graduated compression rating.
  • 4 Degree Elite Fit System uses 2 elastics for greater stretch and recovery for a stay-put fit.
  • 200 needle construction provides highest knit density while maintaining ultra light weight.
  • 14" overall height comes up over the calf.
  • Knit in the USA of imported yarn: 50% Merino wool, 41% Nylon, 9% Elastene.
  • Machine washable (warm gentle cycle).
Shoe Size(US Men)03-5.56-8.59-11.512-14.50
Shoe Size(US Wom)04.5-6.57-9.510-12.500
Shoe Size(Eur)034-3738-4142-4546-490