Sullivans Polyester Quality Thread Works on high-speed sewing machines, high-density fabric sewing and long-distance continuous sewing. This strong thread has a waxy finish and works best with stretch and knit fabrics. This polyester thread is ideal for overlocking, machine sewing and hand sewing. It is made of high strength 100 percent polyester. It is not easy to be fraying or breaking. It is suitable for sewing machine and hand sewing use. It is a perfect gift for your friends and family. Hoard on this high quality sewing and crafting essential from sullivans.