The classic form of jeans for watches The so-called first pair of jeans is not what we think it is born with. Even the name "jeans" was officially adopted by Levi's only in the 1960s when 19 was used. Here, we might as well take 501jeans, the classic work of Levi's, the originator of jeans, as an example to trace the changes of jeans from birth to classics. 1855 The earliest jeans only had back pockets, but no York. 1872, metal rivets are used to strengthen the stressed parts of jeans. 1873 jeans changed from gray to indigo blue. The back pocket is decorated with orange double arch stitches. 1886, the pattern of waist tag changed from a dwarf to two horses. 1890 plus a watch bag with a back York. 1995 Most people use it to hold condoms.