Jeans have become one of the most popular casual clothing items around the world. Nothing speaks louder than consumer demand; It is estimated that over 800 million pairs of blue jeans are produced worldwide, representing a multi-billion dollar business. According to market research firm NPD Group, Americans purchased $13.8 billion worth of jeans in the year ending April 30, 2011. Another source says North America alone accounts for 39 percent of global jeans purchases. jeans, followed by Western Europe at 20%, Japan and Korea at 10%, and the rest of the world at 31%. The story behind the birth of jeans emerges from an interesting collaboration between an innovative tailor and a brilliant businessman. In 1853, Levi Strauss established an entire dry goods business in San Francisco, selling clothing and many other products to small general stores throughout the American West. One of the many regular customers was Jacob Davis, a tailor from Reno Nevada, who purchased his work supplies from the entire sales house of Levi Strauss & Co. At one point, Davis invented the process of riveting the corners of the pockets of the men's pants to make them stronger. Having achieved great success, Davis decides to write to Levi Strauss, suggesting that they apply for a patent together; and Levi agreed. As a result, in 1873, Levi Strauss and Jacob Davis obtained a patent on the process of riveting trousers from the United States Patent and Trademark Office on May 20. It's patent number 139,121 and this is the invention of blue jeans. blue jeans are due to their extremely robust and long-lasting material. This is because the indigo warp was heavily soaked in starch and the denim fabrics were woven into a very tight structure. On the other hand, this "made blue...... middle of paper" process adds 10 to 15% to the price of the fabric, industries continue to save money because more products can be made in less time. Therefore increasing profits, as well as reflecting the savings on consumers. Other benefits of "bio-stoning" include the ability to recycle enzymes, reduced stress on industrial washing machines, shorter processing times and a significant reduction in imperfections, thus increasing productivity and efficiency. As a result, this safeguards the environment by reducing water consumption and waste pollution. The elimination of pumice dust and dust creates a less intensive and safer working condition. However, one problem with biostoning was “backstaining,” which occurs when loose dye particles redeposit on the surface of the fabric, causing discoloration. This setback can be significantly reduced by optimizing operating conditions.