Polyester fiber 100% fabric is good in some cases, but not necessarily in other cases. The following is my personal experience: polyester fiber 100% fabric has good wear resistance, easy cleaning and wrinkle resistance, but poor air permeability and moisture absorption. Therefore, it is suitable for making clothes that need to be cleaned and kept clean frequently, such as sportswear, work clothes, underwear, socks and so on. But it is not suitable for making quilts, sheets and other summer clothes that need to be dry and breathable. Therefore, when choosing which fabric to use, it needs to be considered according to the specific use.