Small thread Polyester Sewing String 1.Material:100% polyester 1.2DX38MM 2.Ne20/2,3,30/2,3,40/2,3,50/2,3,60/2,3 3.200M,100M Polyester Sewing String Features & Benefits:• Made with First Quality high-tenacity low variation staple polyester • Allows the use of smaller thread sizes to minimize seam pucker or needle cutting • 40% stronger than 100% cotton threads of the same size. • Superior color ...