When you hit the trails in our new PhD® Run Ultra Light Low Cut socks, the socks are the only thing that should be low. Expectations and elevations should be high. Because this sock was made to help you push boundaries. Our Indestructawool™ technology enhances durability, while Shred Shield™ technology reduces wear from toe. We included body-mapped mesh zones for additional breathability and Virtually Seamless™ toe for enhanced comfort. We suggest you take it and run with it.

4 Degree™ Elite Fit System

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

Indestructawool™

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

Made In The USA

PhD®

Built for Performance in the Highest Degree

Shred Shield™

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