A denim jacket is a type of outerwear made from denim fabric, which is typically used to make jeans. The term "denim" refers to a sturdy cotton warp-faced textile that has been traditionally used for making work clothes and casual wear. A denim jacket is often associated with classic American style and can be worn as part of a casual or dressed-up outfit. It typically features a button front, a collar, and sleeves, and may have additional pockets, zippers, or embellishments.