Our 100 percent OVER THE KNEE EXTRA WARM wool socks are made of 100% ORGANIC wool in the Dachstein mountain region of Austria in our family factory. These are the original wool Dachstein socks made from 100% boiled wool in a weave so dense they're almost waterproof. We've actually held these boiled wool socks under the faucet for a minute without any water penetrating. Extra heavy and thick, there are no other 100 percent wool socks like these in the world----they represent a unique Austrian wool making tradition. These socks have a reinforced heel and toe and have a beautiful natural weave. For hiking, climbing, skiing expeditions, or at home on cold days, these are the finest 100 percent wool socks you will ever encounter. Made in Austria in a small family factory from 100 percent boiled sheep's wool.