The Levi Strauss & Co. 501 is commonly described as the world’s oldest continuously produced jean model.
The model’s history reaches back to the company’s riveted work trousers of the late nineteenth century. Levi Strauss & Co. began using the 501 designation in 1890, after its original patent protection had expired. The number became associated with a durable, button-fly, five-pocket style that later became a global fashion symbol.
The 501 was initially workwear rather than a luxury or youth-fashion product. Its heavy denim construction, rivets, and practical pocket arrangement suited miners, laborers, ranchers, and other workers. Over the twentieth century, musicians, actors, and youth movements helped transform it into casual clothing.
The 501 is not simply another name for every pair of Levi’s jeans. Levi Strauss & Co. has produced many numbered cuts, including slimmer and boot-cut styles. The 501 identifies a particular long-running model and its recognizable button-fly heritage.