Ausangate Alpacor High Calf Hiking Socks For Women 80% Alpacor/ 23% Nylon/ 2% Spandex Imported Vented mesh across instep and shin for maximum breathability Cushioned terry lining from heel to toe for added comfort. Ankle and instep compression bands for stability. Mesh panels for added breathability. Flat toe seam. Machine wash and dry alpaca fiber socks.