The strength of our bonded fastener is independent of the stock to which it is being mounted to. This quality is achieved by the large bonding area of the fabric overlay, which provided excellent bonding power even on “weak” or difficult stock. The non-woven fabric on the bonded fastener consists of nylon, polyester and cotton and is the basis of its tremendous strength. The underside of the fabric is coated with polyvinyl acetate, rendering it moisture and adhesive proof..