This signature Conrad Anker sock was made for any adventure on the horizon. The Women’s Athlete Edition Approach Crew Socks feature Smartwool’s most advanced Indestructawool technology for enhanced durability and the 4 Degree elite fit system for an unmatched performance fit. Plus, achilles straps for extra protection and warmth. Explore longer and go further in these high-performing Merino crew socks.4 Degree Elite Fit SystemFor a dialed, performance-oriented fit with flex zone at ankle joint.Targeted CushionCushioning in specific places depending on activity. Typically on the ball of the foot and the heel.IndestructawoolIndestructawool technology features a patent-pending construction method for exceptional durability and comfort.Virtually Seamless ToeSmoothed out toe seams for ultimate in-shoe fit and comfort.