I bought these and two other types of socks on this site, all "one size fits all". The sizes vary even within the same pairs, some are very tight with no stretch and some quite long, so the sizing is super weird. I have size 39-40 feet and was not able to use many of these socks due to them being too small and or tight. Bad chemical smell that did not properly wash out. Pretty sure they came directly from China. Did not seem to be wool, if there is wool in them it's minimal, hard to say since there were no tags or even a note that said anything about what materials or blends were used in these socks, no washing instructions or anything. I washed them on the wool cycle in my washing machine but as mentioned they still smelled really toxic after that. Can absolutely NOT RECOMEND these. Pretty sure this is some sort of scam for really low quality socks made in some awful place judging by the smell and quality. I now have 15 pairs of socks that are unsusable to me and I will be throwing out. (Btw am not snobby with this ish, will regularly buy cheap socks from department stores, these just break the scale in terms of low quality. Am also very experienced with wool products as I live in a cold climate with small children and we get dressed in wool clothing on the daily this time of year)