Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool™ technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless® toe, and the 4 Degree™ elite fit system, these responsibly sourced Merino wool socks have comfort covered.  Features: Sock Height: Crew Virtually Seamless™ toe for enhanced comfort 8.5" overall height Made in USA of Imported Yarn: 56% Merino Wool, 41% Nylon, 3% Elastane Benefits: PhD®: Built for Performance in the Highest Degree 4 Degree™ Elite Fit System: For a dialed, performance-oriented fit with flex zone at ankle joint Indestructawool™: Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort Mesh Venting: Mesh ventilation zones provide optimum moisture management and maximum breathability Light Cushion: The ideal cushion for varied trail and road terrain