What's the best content of cotton socks?

Cotton socks should contain more than 80% cotton.
The cotton content is more than 70% without pilling, 80-95% is better to wear, adding spandex is necessary, a little rayon is also OK, it will be more smooth. Absolute 100% cotton does not exist, 100% cotton has no elasticity and toughness.
Pure cotton fabric is a kind of textile which is made of cotton and interweaved by warp and weft yarns. At present, according to the actual processing of cotton source, it can be divided into primary cotton fabric and recycled cotton fabric. Cotton with a cotton content of about 75% is pure cotton. Don't think that pure cotton is organic cotton. There are still differences between them.