Diesel founder Renzo Rosso began stitching jeans on a sewing machine at the age of fifteen. He used his mother's sewing machine to produce low-riding, bell bottomed jeans, which he would wear himself and sell to his friends for 3500 lira a piece. He later attended an industrial textile manufacturing high school in Padua. Diesel founder Rosso began purchasing additional fashion companies in 2002, under the parent company Only The Brave, which Diesel was brought under as well. Companies purchased by Only the Brave included Maison Martin Margiela, Viktor & Rolf, Marni, and licensing company Staff International. In 2005 Diesel released the book "Fifty" upon Rosso's fiftieth birthday, an illustrated history of the company, with a print-run of ten thousand. In the 2000s, the company began to license its brand to other retail manufacturers, in order to create new product categories. These lines included the sunglasses line Diesel Eyewear in partnership with Marcolin, the jewels and watches line Diesel Watches in partnership with Fossil, the fragrance line in partnership with L'Oréal. The production of each line involves supervision from Diesel itself.