What is the best cotton content of cotton socks?

Let me, an insider who has been engaged in cotton socks business for many years, answer this question. Cotton socks are not 100% pure cotton, so there are no real pure cotton socks. So how much are cotton socks? If you look at what is written on the back of the sock sign, it doesn't make any sense. It is a random mark and has no reference value, because basically no quality report is made except for socks entering large supermarkets. Generally, more than 85% cotton content will be marked on the back of the sign. In fact, socks are composed of veil, elastic fiber and elastic thread. Generally, the content of real cotton exceeds 50%, so it should be said that this kind of socks are good socks for the public, which are breathable and will not stink their feet. 65% to 80% of them are high-end cotton socks, and the upward direction is rare. At the same time, this kind of cotton yarn is not all cotton, not pure. I hope my answer will satisfy everyone.