SmartWool Men's PhD Snowboard Medium Socks - Past Season 67% Merino Wool, 31% Nylon, 2% Elastane Built for Performance in the Highest Degree, Uses two elastics for greater stretch and recovery to keep the sock in place, Patented ReliaWool technology in high impact areas provides superior durability, Men's-specific mesh ventilation zones provide additional breathability and moisture management, Medium cushioned shin and foot for impact absorption and warmth Sock Height: Over the Calf, 14" overall height Flat knit durable toe seam Style: SW0SW032