Smartwool PhD Ultra Light Pattern Low Cut cf-size-d-mens-6-6-womens-7-8 super-efficient handheld now features insulated

super-efficient handheld now features insulated hydration to keep runners cooler

The athletic fit provides room for active movement

The FS6® Performance Foot Sleeve is incredibly effective at relieving the pain of Plantar Fasciitis

easy adjustability and lace storage

Conforms to left and right structure of the foot providing enhanced fit and reduced risk of blisters

Smartwool PhD Ultra Light Pattern Low Cut cf-size-d-mens-6-6-womens-7-8 super-efficient handheld now features insulatedWith ultra light cushioning and a low cut build, our PhD Run Ultra Light Pattern Low Cut socks are designed to pair well with your precise fitting running shoes. We made these Merino wool socks with our best technologies to bring you durability, breathability, comfort, and a great fitso you can run for miles and miles.