1.100% nylon yarn 2)High resistance, tough feeling, knotless,durable 3)Various colors available, DTM ... chemical, bacteria, mildew, wear, sunlight andabrasion. Azo free. Our bonded nylon thread remains unbroken, and plies stay together do not split ... other heavy duty sewing. It contains thegeneral nylon's character, low elongation's super quality, high strength, water resistance and wear-proof. This ...