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SmartWool Men's PhD Run Ultra Light No Show Socks

Style: SW147
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Get all the moisture and temperature regulation benefits of Merino in a no-show silhouette. The SmartWool Men's PhD Run Ultra Light No Show Socks, complete with SmartWool's 4 Degree elite fit system, feature a men's-specific mesh ventilation zones and a virtually seamless toe.


  • Virtually seamless toe
  • Lowest profile run sock available

  • 200 needle construction provides highest knit density while maintaining ultra light weight

  • Sock Height: Hidden

  • Knit in USA of Imported Yarn: 51% Merino Wool/45% Nylon/4% Elastane


  • Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean

Men's Sizing: (Shoe Size Reference):

  • S: 3-3.5

  • M: 6-8.5

  • L: 9-11.5
  • XL: 12-14.5

Smartwool Socks Sizing

U.S. Men's Shoe Size3-5.56-8.59-11.512-14.5
U.S. Women's Shoe Size4-6.57-9.510-12.5N/A
Euro Shoe Size34-3738-4142-4546-49
UK Shoe Size2-4.55-7.58-10.511-13.5
Calf Circumference (Largest part of the calf)11"-14.5" (18-26.5 cm)12.5"-16.5" (32-41 cm)14.5"-18" (37-45.5 cm)16"-23" (41-58 cm)

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