Denim is a durable cotton or cotton-blend twill (twill is a type of weave) textile, typically used to make jeans, overalls and other types of clothing. It is a strong fabric made using the warp and weft weaving method which results in a diagonal denim ribbing. In the US, denim has been used since the mid-19th century. At that time, clothes for workers such as miners, surveyors, e... https://www.kleiderly.com/our-blog/fabric-series-all-about-denim