1, hook and loop fastener known as Velcro, also known as magic. Surface with the use of hook (with hook-type band) and suede (with lap-type belt) ride together, hook their hook and loop fastening fabric, you need to open, subject to certain force in the next, flexible hook was straightened, loose plastic ring from a pile and open, and then restore the original hook-type, and so repeatedly opening and closing of up to ten thousand to pay as much as widely used in all kinds of items Velcro opening and closing or fastening often the location, but can only use the traditional sewn Velcro means fixed on the product or object. 2, using a hundred percent silk woven nylon material.