DescriptionSome of our best fitting, most advanced run socks yet—we've packed years of testing, prototypes, and running smarts into these ZQ-Certified Merino wool socks. Featuring Targeted cushioning in the ball and heel of the foot to help maximize comfort with minimal in-shoe volume, body-mapped mesh ventilation zones, and a Virtually Seamless™ toe, this running socks is ready to keep up with you.4 Degree™ Elite Fit SystemFor a dialed, performance-oriented fit with flex zone at ankle jointTargeted CushionCushioning in specific places depending on activity. Typically on the ball of the foot and the heel.Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfortMade In The USAVirtually Seamless™ ToeSmoothed out toe seams for ultimate in-shoe fit and comfortWomen's Specific FitWomen's specific fit; narrower heel and slimmer fitFeatures Sock Height: Micro Virtually Seamless™ toe for enhanced comfort Achilles tab designed to prevent sock from slipping down into footwear CareMachine Wash Warm, Inside OutDo Not BleachTumble Dry LowDo Not IronDo Not Dry Clean