YKK® Cosmolon® brand hook and loop fastener is a woven nylon tape fastener consisting of two mating strips. The hook or male section is covered with tiny hooks. The other side is covered with tiny soft loops. When pressed together the hooks and loops engage, creating and adjustable, highly versatile and secure closure. Our pressure sensitive Cosmolon® has an acrylic backing. Just peel off the paper backing and adhere to clean smooth surface.