Features of the Smartwool Men's SnowBoard Targeted Cushion Colorado OTC Sock Indestructawool Technology for enhanced durability 4 Degree elite Fit system for a dialed-in, Performance-oriented Fit Body-mapped mesh zones for added breathability Wider welt for secure Fit and comfort Virtually seamless toe for enhanced comfort Fabric Details 63% Merino wool, 11% Nylon, 24% Recycled nylon, 2% Elastane