Although 50 1 overalls produced by Levi's Company in 1850 were recognized as the originator of jeans by the world, it was not until 1873 that the United States Patent and Trademark Office granted Levi's a patent for its overalls (the first use of metal buttons and the first use of metal rivets to reinforce the stressed parts of jeans) that it was considered as the symbol of the birth of jeans.
The earliest jeans fabric was canvas, brown, with no watch pocket, no belt buckle (ear), only back pocket and no zipper. Since its birth, it has gone through a long process of improvement and development: 1855 Levi Strauss replaced the original brown canvas with blue denim imported from France, which laid the foundation for the basic fabric and color of modern jeans.59989.99999989895