Levi Strauss & Co. is experiencing losses and decreasing market share in the denim jeans market. Originally founded in 1853, Levi's gained early success through innovations like riveted jeans and capturing new markets. However, increased competition from brands like Calvin Klein has led Levi's to lose customers. While Levi's has maintained a reputation for corporate responsibility, efforts like new ad campaigns and a partnership with Walmart have not been enough to offset an overall slowdown in denim sales.