... .(Polyester Sewing Thread) Polyester Sewing thread Features:a) (40s/3): used for tailoring, trousers, jacket, medium, heavy fabricb) (20s/2 ... ), (20s/3): used for jeans, upholstery PVC bags, canvas, footwearc) (40s/2) for shirts, jackets, pants1) 20/2 ... , 2000yards/3000yards/2000 meters/3000meters2) 20/3, 1600yards/2000yards3) 40/2 ...