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Continue ShoppingSmartwool PhD Run Ultra Light Micro
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.
For a dialed, performance-oriented fit with flex zone at ankle joint
Built for Performance in the Highest Degree
Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort
Shred Shield helps reduce wear from toes
The absolute minimum between you and your shoes.
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