The denim industry is a sector of the fashion and textile market focused on producing and selling denim fabric and products, primarily jeans. Denim is a sturdy cotton twill fabric, known for its durability and versatility, making it a popular choice for casual wear. The industry includes various stages, from raw cotton production to fabric weaving, dyeing, and garment manufacturing. Major brands and retailers, such as Levi's and Wrangler, play significant roles in the denim market. The industry also faces challenges, including environmental concerns related to water usage and chemical treatments in the production process. Sustainable practices are increasingly being adopted to address these issues.