1.100% nylon yarn 2)High resistance, tough feeling, knotless,durable ... , wear, sunlight andabrasion. Azo free. Our bonded nylon thread remains unbroken, and plies stay together do not ... split. It has better tenacity andstretch than unbonded nylon thread. For many applications, such as luggage, ... and other heavy duty sewing. It contains thegeneral nylon's character, low elongation's super quality, high ...