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 withstand high temperatures and is less likely to fray compared to natural fibers. This thread is available in a wide range of colors and thicknesses, allowing for versatility in different applications. It is commonly used in clothing, upholstery, and crafts, providing a reliable option for both professional and amateur sewers.