If you are looking for sewing threads with great tension, no need to look further. This heavy-duty bonded nylon thread with great abrasion resistance is way stronger than regular cotton or polyester threads. An adult will not be able to break it with bare hand. No matter whether for commercial or household uses, this tough sewing string will not let you down. The thread can easily bind thick and tough materials such as leather, vinyl, denim, and canvas. When being used for upholstery or drapery, the stitches are inconspicuous and sturdy. Sewing heavy buttons, handbags, suitcases, luggage, garments, boots, or even dog toys cannot go easier! The thread is suited for outdoor or water sport gear repair.