With all of the features that the PhD® Run Ultra Light Micro offers, your newest technology may be in your sock drawer. Indestructawool™ technology provides you with enhanced durability, while a 4 Degree™ elite fit system makes for a performance oriented fit. And Shred Shield™ technology reduces wear and tear from your toes. It's breathable, comfortable, and built to help take you farther.
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
Made In The USA
Built for Performance in the Highest Degree
Shred Shield helps reduce wear from toes
Ultra Light Cushion
The absolute minimum between you and your shoes.
Virtually Seamless™ Toe
Smoothed out toe seams for ultimate in-shoe fit and comfort