Polyester and spandex are two popular synthetic fibers commonly used in clothing and activewear. Polyester is known for its durability, wrinkle resistance, and moisture-wicking properties, making it ideal for athletic wear. Spandex, on the other hand, is highly elastic and provides stretch and flexibility to garments. When blended together, polyester and spandex create a fabric that is comfortable, breathable, and form-fitting. This blend is often used in leggings, workout tops, and other athletic apparel that requires both durability and stretch. Additionally, the combination of these two fibers allows for easy care and maintenance, as the fabric is quick-drying and retains its shape even after multiple washes.