Polyester thread is a type of sewing thread made from synthetic fibers derived from petroleum. It is known for its strength, durability, and resistance to shrinking and stretching, making it a popular choice for various sewing projects. Polyester thread is often used in both machine and hand sewing, as it can easily glide through fabric without tangling. This thread is available in a wide range of colors and thicknesses, allowing for versatility in different applications. Additionally, polyester thread is less prone to fading and is resistant to mildew, making it suitable for outdoor fabrics and garments that require long-lasting performance.