Don't let the cold stop you from taking one last run: the PhD Ski medium delivers maximum warmth and breathability when the going gets cold. Patent-pending Indestructawool technology provides ultimate durability to make sure your socks are ready to go, run after run. Made with our 4 Degree elite fit system for a sock that doesn't bunch, slip, or bind.
PhD: Built for Performance in the Highest Degree
4 Degree? Elite Fit System: Uses two elastics for greater stretch and recovery to keep the sock in place
ReliaWool: Patented ReliaWool technology in high impact areas provides superior durability
Mesh Venting: Men's-specific mesh ventilation zones provide additional breathability and moisture management
Medium Cushion: Medium cushioned shin and foot for impact absorption and warmth
Care Instructions: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.