100% polyester fabric is a type of synthetic fabric that is made entirely from polyester fibers. Polyester is a man-made polymer that is produced through a chemical reaction between petroleum, coal, and water. The resulting fabric is strong, durable, and resistant to wrinkles, shrinking, and fading. It is lightweight and has a smooth texture, which makes it easy to care for and machine washable. It is also resistant to moisture, making it ideal for use in sports clothing and outdoor gear.