The Smartwool PhD Outdoor Lt Mini men's sock is an ankle-high powerhouse made for mileage. It features the IndestructawoolTM technology for ultimate durability and the 4 DegreeTM elite fit system for a dialed fit. The light cushioning offers impact protection on the road or trail. The mini height sock features body-mapped mesh zones for added breathability, while the Virtually SeamlessTMtoe for enhanced comfort. It comprises of 58% Merino Wool, 40% Nylon and 2% Elastane.