Features of the Smartwool PhD Ski Light Elite Over The Calf Sock Indestructawool Technology for enhanced durability 4 Degree elite Fit system for a dialed, Performance-oriented Fit Body-mapped mesh zones for added breathability Wider welt for secure Fit and comfort Virtually Seamless toe for enhanced comfort 14in. overall height Fabric Details 59% Merino Wool, 38% Nylon, 3% Elastane