THE FINEST SPECIALTY THREAD - The InvisaFil Specialty Thread is the finest thread line from WonderFil. It is a silk-like 100wt, 2-ply cottonized polyester. MAKE YOUR STITCHES INVISIBLE - Ultra-fine thread creates super low bulk stitches and virtually ?disappears?. Crafted for whenever you want to hide stitches, such as English paper piercing, delicate lace designs, and fine fabrics. STURDY & DURABLE - Fine thread is surprisingly strong in addition to being cotton-like with negligible stretch. Enjoy the soft feel of this silk-like thread for stitches that are hardly noticeable. WIDE VARIETY OF COLORS - Available in a wide variety of colors, from subtle to bright with matte finish. Choose a color for any occasion, you decide how much you want the thread to show (or not at all). International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.