In 1948, Velcro was invented by the Swiss electrical engineer George de Mestral in France. Velcro is the trade mark of the first commercially marketed fabric hook-and-loop-fastener. It compromise of two layers. The first side of hook consists of a fabric piece covered with small hooks and the second side of loop side is covered with the tiny and hairier loops. The hooks catch in the loops when the two faces are presented together. The two surfaces apart when they are separated by peeling or pulling and produce a distinctive sound of ripping.