Dahlgren Summit Over-calf Alpaca SockTechnical comfort in smart, tonal colorways are found in the Dahlgren Summit Over the calf alpaca sock. A thick rugged sock, it is extra heavy for additional insulative warmth and padding. Over the calf length and ample thickness protect against the coldest and nastiest weather. Made with Alpaca fiber, Merino wool and a bit of synthetic to maximize absorption, transfer and evaporation of moisture. Built in arch support means good cushioning all day.