Our Women&';s Run Zero Cushion Low Ankle socks offer the comfort and durability that will help make every mile feel good. Indestructawool(TM) and Shred Shield(TM) technologies increase the sock&';s durability, while the 4 Degree(TM) elite fit system, Virtually Seamless(TM) 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. Sock Height: Low Ankle Sock Cushion: Zero Cushion Indestructawool(TM) technology with extended durability zones 4 Degree(TM) elite fit system for a dialed-in, performance-oriented fit Mesh zones for added breathability Shred Shield(TM) technology reduces wear from toes Virtually Seamless(TM) toe for enhanced comfort Women&';s specific fit Made in the USA of Imported Yarn: 46% Merino Wool 29% Nylon 22% Recycled Nylon 3% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.