Smartwool Men's PhD® Run Ultra Light Micro Socks

Smartwool Men's PhD® Run Ultra Light Micro Socks


When it comes to our most comfortable running socks, we pull out all the stops to continuously make improvements to our products. With brand-new Shred Shield™ technology to help improve wear in the toe box, our PhD® Run Ultra Light Micro socks feature the 4 Degree™ elite fit system and our  Indestructawool™ technology for a dialed-in fit and improved durability. 



    Built for Performance in the Highest Degree

    4 Degree™ Elite Fit System

    For a dialed, performance-oriented fit with flex zone at ankle joint


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

    Mesh Venting

    Mesh ventilation zones provide optimum moisture management and maximum breathability

    Ultra Light Cushion

    Non-cushioned for maximum performance in close-fitting shoes

    Shred Shield™

    Shred Shield helps reduce wear from toes

    Sock Height: Micro

    Virtually Seamless™ toe for enhanced comfort

    Achilles tab designed to prevent sock from slipping down into footwear

    Made in USA of Imported Yarns: 45% Merino Wool, 50% Nylon, 5% Elastane


    • Machine Wash Warm, Wash Inside Out.
    • Do Not Bleach.
    • Tumble Dry Low.
    • Do Not Iron.
    • Do Not Dry Clean.