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SmartWool Men's PhD Outdoor Approach Mini Socks

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The next evolution in SmartWool's partnership with iconic alpinist Conrad Anker, the SmartWool Men's PhD Outdoor Approach Mini Socks brings technology to new heights. Designed to fit seamlessly in approach or hike footwear, the Outdoor Approch socks offer SmartWool's 4 Degree elite fit, comfort and Indestructawool technology for durability to handle demanding approaches, day hikes and every day wear.


  • PhD: Built for Performance in the Highest Degree

  • 4 Degree Elite Fit System: Uses two elastics for greater stretch and recovery to keep the sock in place

  • Indestructawool: Indestructawool technology features a patent-pending construction method for exceptional durability and comfort

  • Mesh Venting: Men's-specific mesh ventilation zones provide additional breathability and moisture management

  • Light Elite Cushioning: Light Elite cushioning under the entire foot provides protection without bulk


  • Sock Height: Mini

  • Targeted cushioning provides extra protection for ankles

  • Virtually Seamless toe
  • 3.75" overall height
  • Care: Machine Wash Warm, Wash Inside Out. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean

  • Knit in USA of Imported Yarns: 57% Merino Wool, 40% Nylon, 3% Elastane

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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