An ankle high powerhouse, the PhD Outdoor Light Mini is made for mileage. Great for long summer treks, our lightweight, best fitting hiking sock combines support, stretch, and recovery. Featuring Indestructawool technology for ultimate durability and the 4 Degree elite fit system for a dialed fit. Light cushioning offers impact protection on the road or trail, while the Virtually Seamless toe offers more comfort in a trail shoe. Features 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 Sock Height: Mini Virtually Seamless toe for enhanced comfort 3.75" overall height Made in USA of Imported Yarn: 58% Merino Wool, 40% Nylon, 2% Elastane