The Smartwool PHD Outdoor Light Crew Alpine Blue women's sock provides the same comfort every time you wear them. It is the best-fitting hiking sock that combines support, stretch, and recovery. The benefits include 4 DegreeT Elite Fit System, IndestructawoolT technology and Virtually SeamlessT toe for enhanced comfort. The light cushioned micro height sock includes mesh ventilation zones that provide optimum moisture management and maximum breathability. It comprises of 58% merino wool, 39% nylon and 3% elastane.