This classmate, I am in the fourth grade of junior high school this year. Based on my experience in the past three years, pure cotton is good, it is very comfortable to sleep on, and it is very comfortable. In fact, there are many places where pure cotton pants are worn. You can buy them all, but you have to work hard. First of all, you have to look at the trademark of the pants to know whether they are polyester or pure cotton. But if they are very cheap, it is better not to buy them. It is definitely a fake by the manufacturer. Don't believe it, so you have to buy it from a better store. I'm in Weihai. I don't know what good points this will have. I'm sorry! ! ! ! ! !