I have then bought about a year ago half a new set - Seven 3-packs. From memory I still know that a red sticker was on the 3-packs that Puma has anything improved - so much for! All socks have for months extremely gefusselt on the inside, totally uncomfortable, if you have the back pulled. For some weeks now I have to constantly throw away socks, because they have become totally thin in the heel and ball and have holes ...