He saw that it had countless tiny hooks that clung to the tiny loops in the fabric of his pants. This gave him the idea to design a new kind of fastener. The fastener would be made of two nylon strips,one side with stiff hooks like the burrs and the other side with loops like the fabric of his pants. His invention, Velcro,has since become ubiquitous. It can be found on everything from shoes to wallets to blood pressure cuffs to space shuttles.