Smartwool PhD Ski Light Socks - Men's: The PhDA(R) Ski Light helps keep your feet warm and dry even on the longest days. We placed cushioning where skiers need it most: on the shin to banish shin bang and on the bottom of the foot for warmth and impact protection. 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. PhDA(R) 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 Indestructawool(TM) Indestructawool(TM) technology features a patent-pending construction method for exceptional durability and comfort Mesh Venting Men's-specific mesh ventilation zones provide additional breathability and moisture management Light Cushion Light cushioned shin and sole for impact absorption and warmth Features Sock Height: Over the Calf Virtually Seamless toe 14" overall height Knit in USA of Imported Yarn: 56% Merino Wool, 42% Nylon, 2% Elastane Style: SW015031