These Merino ski socks feature Smartwool's most advanced Indestructawool™ technology for enhanced durability and our 4 Degree™ elite fit system for an unmatched performance fit. Plus, body-mapped mesh zones for added breathability. We'll see you on the slopes. Smartwool Women's Ski Socks Zero Cushion SW001865l90 Indestructawool™ technology for enhanced durability 4 Degree™ elite fit system for a dialled-in, performance-oriented fit Shred Shield™ technology reduces wear from toes Wider welt for secure fit and comfort Body-mapped mesh zones for added breathability Women's specific fit: narrower heel and slimmer fit Weight: 0.134 lbs Country of Manufacture: United States 55% Merino Wool, 10% Nylon, 31% Recycled Nylon, 4% Elastane Wash inside out. Machine wash cold or warm. Gentle or delicate cycle. Tumble dry on low heat. Do not bleach. Do not dry clean. Tumble dry low. Do not iron.