Smartwool Women's PHD Medium Ski Performance Socks - Past Season 62% Merino Wool, 36% Nylon, 2% Elastane Knit in USA of Imported Yarn Sock Height: Over the Calf - Medium cushioned shin and foot for impact absorption and warmth Women's-specific mesh ventilation zones provide additional breathability and moisture management - Narrower profile provides perfect women's specific fit Style: SW0SW341 Built for Performance in the Highest Degree