Smartwool PhD Pro Endurance Print Sock
Smartwool PhD Pro Endurance Print Sock, Smartwool worked with their athlete, Rob Krar, to create the ultimate ultra run sock. With highly specified cushioning and fit, it's made for mile after mile after mile of unwavering comfort and performance. And, thanks to Smartwool's new printing technology, it looks pretty great too.Rob Krar signature sock; Indestructawool technologyMinimal and targeted sole cushionAchilles heel cushionMalleolus ankle cushion for protection on the most rugged trails4 Degree elite fit system for a dialed, performance-oriented fit