In the article description was unfortunately not to be found, from which the sock is accurate. Unfortunately, I realized that it contains merino wool. I will respond to any other wool, but on the legs do not seem to be so bad. I have worn them a while to sample and then to me they decided to keep, because it did not begin to itch. I am two weeks drove them in Ski (with wash course) and they have just as fit as at the end of the first day and itching has nothing. Since you can not complain.