Features of the Smartwool Women's Ski Full Cushion Mountain Snowflake Pattern 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 Women's specific Fit: Narrower heel and Slimmer Fit Fabric Details 59% Merino wool, 9% Nylon, 30% Recycled nylon, 2% Elastane