When it comes to their most comfortable running socks, Smartwool pulls out all the stops to continuously make improvements to their 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.
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