Quality sock, it is woolen, you put it in the washing machine and it comes out 3 sizes smaller. I didn't know I had to wash socks by hand in cold water...

Very good quality.
Very warm, and they don't smell easily.

BUT! You should know that they are VERY THICK.

You need a shoe one size bigger for your foot to fit normally and comfortably.

I bought them to keep my feet warm only during my trips abroad in winter. I wore them with good waterproof hiking shoes about 10 times. They immediately tore at the heel and shrunk after washing. My feet sweat a lot when I walked and they would get cold when I stopped. I am not satisfied at all with their purchase.