Mario Prada started the Prada label in 1913. He designed and sold handbags, shoes, trunks, and suitcases though two boutiques in Milan, and had clients across Europe and the US. When the signature Prada suitcases, made from heavy, cumbersome walrus skin, proved to be ill suited for air travel, Prada concentrated on designing exquisite leather accessories and waterproof handbags. In 1978, Mario¡¯s granddaughter, Miuccia Prada, took over the company. Miuccia was a former mime who had spent five years studying at Milan¡¯s Teatro Piccolo, and had a PhD in political science. Although her qualifications didn¡¯t seem appropriate, her sense of fashion was unmistakable. The label was still mainly a leather goods manufacturer at that point, and had been struggling financially for several years. Competition from other fashion houses like Gucci had taken its toll. Miuccia turned things around and steered the House of Prada towards the world of haute couture. About the same time as she took the helm of the Prada label, Miuccia married Patrizio Bertelli. Bertelli took on the role of business manager, allowing Miuccia to focus on designing and perfecting the new Prada look. Miuccia had been making black waterproof backpacks since 1970, out of a nylon fabric called ¡°Pocone¡±. She unveiled the classic Prada handbag - simple, sleek, black nylon ¨C in 1985 and became an overnight sensation. The bag was functional and sturdy, practical and fashionable. The high price tag that accompanied the handbags caused an onslaught of designer knock-offs, which only helped to make the genuine Prada articles more in demand.