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Smartwool PhD Pro Approach Crew

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Lightweight, Durable Cushioning Allows You to Reach for the Stars — And Then Some

The approach is sometimes the hardest part of the climb, but the Smartwool® PhD® Pro Approach Crew Socks make it easier to get through. The PhD® certification means these garments are built for performance in the highest degree, perfect for pushing you towards your best life.

Constructed from the patent-pending Indestructawool™ technology, which is the perfect method for exceptional durability and comfort. Multiple features make every step more comfortable. With insights from Conrad Anker, it's designed for a perfect fit with added mesh venting for ultra-breathable moisture management zones. An Achilles strap and targeted cushioning is even added to provide extra warmth and protection without adding bulk.

When Mother Nature demands the most out of you, the Smartwool® PhD® Pro Approach Crew Socks is just the thing that will help get you through it. Created with the state-of-the-art 4 Degree™ Elite Fit System provides a dialed, performance-oriented fit with a flex zone at the ankle joint. For the ultimate adventure, make sure you're suited from head to toe.


  • Crew sock height
  • Virtually Seamless™ toe for enhanced comfort
  • Achilles strap provides extra warmth and protection
  • Made with premium yarns to enhance comfort and durability
  • Made in USA of Imported Yarn — 49% Merino Wool, 48% Nylon, and 3% Elastane

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    Shoe Size
    (US Men)
    Shoe Size
    (US Wom)
    Shoe Size

    Cuff Height: Crew 

    Fabric Type: Wool / Wool Blend 

    Medium Gray - Medium

    Mfg PartNum: SW001038052-M 

    Medium Gray - Large

    Mfg PartNum: SW001038052-L 

    Medium Gray - X-Large

    Mfg PartNum: SW001038052-XL 

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    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50 are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 23