Business attire typically refers to clothing that is appropriate for professional settings. It usually includes a SUIT, which is a two-piece ensemble consisting of a jacket and trousers, and SUITS, which are a matching set of jacket, trousers, and sometimes a vest. SUITS are often made from wool or synthetic fabrics and come in a variety of colors and styles. Business attire is often seen as a sign of respect and professionalism, and is often required in certain workplaces.