An ankle-high powerhouse, the PhD® Outdoor Light Mini is made for mileage. Great for long summer treks, it 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 offer more comfort in a trail shoe. PhD® - Built for Performance in the Highest Degree 4 Degree™ Elite Fit System - Uses two elastics for greater stretch and recovery to keep the sock in place Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort Mesh ventilation zones provide optimum moisture management and maximum breathability Light cushioned shin and sole for impact absorption and warmth Sock Height: Mini 3.75\" overall height Virtually Seamless™ toe Made in USA of Imported Yarn: 58% Merino Wool, 40% Nylon, 2% Elastane Care Machine Wash Warm, Wash Inside Out. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.