Description Features Sock Height: Over-the-Calf Sock Cushion: Full Cushion 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 Made in the USA of Imported Yarn: 63% Merino Wool 10% Nylon 25% Recycled Nylon 2% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.   Care Machine Wash Warm, Inside Out, Do Not Bleach, Tumble Dry Low, Do Not Iron, Do Not Dry Clean. Smartwool W's Ski FC OTC - Mountain Factor