Jeans are pants, a kind of clothing, usually made of denim or denim. The term "jeans" usually refers to a special style of trousers, called "blue jeans". It was invented by Jacob W. Davis in collaboration with Levi Strauss & Co. in 1871 and patented by Jacob W. Davis and Levi Strauss in May. February 20, 1873. Prior to Levi Strauss's patented pants, the term "blue jeans" was used for a variety of clothing (including pants, overalls and coats) made of blue denim. Jeans were originally designed for cowboys and miners. In the 1950s, jeans became popular among teenagers, especially the members of the grease subculture. Jeans are a common fashion in the hippie subculture of the 1960s. In the punk rock and heavy metal youth subculture of the 1970s and 1980s, jeans continue to be popular. Long established brands include Levi's, Lee and Wrangler. In the 2010's, jeans are still popular fashion goods, they have a variety of fit, including tight, tapered, slim, straight, boot cut, smoked bottom, narrow bottom, flared bottom, low waist, back and trumpet shape. The jeans trousers of "old-fashioned" (visible old and worn-out, but still intact and full-featured) have become more and more fashionable, which makes pre-sale "old-fashioned" jeans become a common feature in commercial sales.

In the 2010's, jeans are very popular in casual wear all over the world. They come in many styles and colors. But blue jeans are especially suited to American culture, especially in the old West. Similarly, although jeans have been the most commonly known as fashion clothes for decades, they are still used as protective clothing by some people (such as ranchers and motorcyclists) due to their high durability compared with other ordinary fabrics.