Suitable for use with all fabrics whether sewing by hand or machine, and for many applications - seams, overlooking, button holes, fine ornamental and decorative stitching. Sew-All combines the excellent sewing properties of silk with the strength and durability of polyester. Guaranteed no-twist and lint free. A soft and supple thread, light resistant and colour-fast, and in an extensive range of brilliant colours, with a silk-like gloss. Recommended machine needle: Universal size 70-90. 100%polyester.