Our Women’s Run Zero Cushion Low Ankle socks offer the comfort and durability that will help make every mile feel good. Indestructawool and Shred Shield technologies increase the sock’s durability, while the 4 Degree elite fit system, Virtually Seamless toe, women's specific fit, and breathable mesh zones increase its comfort. No matter if you’re hitting the trail, the pavement, or the treadmill for some good old-fashioned training miles, be sure your gear includes the sock that will help you stay comfortable on every stride. Indestructawool technology with extended durability zones 4 Degree elite fit system for a dialed-in, performance-oriented fit Mesh zones for added breathability Shred Shield technology reduces wear from toes Virtually Seamless toe for enhanced comfort Women's specific fit Achilles tab prevents sock from slipping into footwear 47% Merino Wool 12% Nylon 37% Recycled Nylon 4% Elastane Machine wash warm, inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean.