Nylon is a chemical fiber. Now the common ones are polyester and viscose. Generally, polyester is slightly better than viscose. In winter, the fabrics of outerwear are mostly these two types. There are few pure cotton fabrics, and the more expensive ones are Pure wool and cashmere.
         Pure cotton is generally more close to the body, comfortable to wear, and does not irritate the skin (without formaldehyde), pure cotton is more comfortable, soft, and close-fitting clothes, generally pure cotton is better. Such as underwear, summer T-shirts, casual pants, jackets, etc.
         It is not recommended to wear chemical fiber clothing close to the body, because the formaldehyde content standard does not meet the close wear, so make more outerwear fabrics. Chemical fiber clothing has high color fastness and is not easy to fade; while pure cotton fabrics have low color fastness and are easy to fade. Chemical fiber clothing, when making fabrics, is strong, windproof, stain-resistant, easy to wash, and can be washed by hand and machine. After washing, there is no need to iron, just flatten and shake (it is not easy to form wrinkles, but once dead wrinkles are formed, they cannot be ironed);
         Pure cotton fabrics are recommended to be washed by hand. If they are machine washed, they are easy to deform and need to be ironed after washing (otherwise they are all small folds, which belong to live wrinkles and can be ironed out), and pure cotton fabrics have a certain shrinkage rate.