polyester sewing thread has a good tenacity 60/3 polyester sewing thread has a good tenacity,you can use in making trousers, coats, suits, shirts, etc.Also we have other items20/2,20/3,20/4,20/6,20/9,30/2,30/3,40/2,40/3,50/2,50/3,60/2Please contact me if you are interested . 40/3 100% Spun Polyester Sewing Thread