Smartwool Mens PhD Snowboard Medium Pattern 64% Merino Wool, 34% 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, Mens-specific mesh ventilation zones provide additional breathability and moisture management, Medium cushioned foot and leg for high impact absorption and ultimate warmth. Sock Height: Over the Calf 14&quot; overall height Flat knit durable toe seam Style: SW0SW038 - Knit in USA