Polyester is a synthetic fiber known for its durability, wrinkle resistance, and easy care. It is commonly used in clothing, upholstery, and bedding due to its ability to retain its shape and color after multiple washes. Polyester is also known for its moisture-wicking properties, making it a popular choice for activewear and outdoor gear. Additionally, polyester is often blended with other fibers such as cotton or spandex to improve its stretch and breathability. Despite its synthetic nature, polyester is a versatile and cost-effective material that is widely used in the fashion and textile industry.