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.
S - men's size 3-5.5, M - men's size 6-8.5, L - men's size 9-11.5, XL - men's size 12-14.5