When you choose clothes or bedding, you should pay attention to the fabric. Polyester is a common fabric. Do you know what polyester is? What are the advantages of this fabric? What is polyester? Polyester, also known as polyester fiber, is a synthetic fiber spun from polyester, which is condensed from organic dicarboxylic acid and diol alcohol. Polyester has many excellent textile properties and a wide range of uses. It can be made of pure textile, or blended with cotton, wool, silk, hemp and other fibers and other chemical fibers.