A formal suit typically consists of a tailored jacket and matching trousers, often made from wool or a wool blend. It is designed for professional or formal occasions, such as business meetings, weddings, or formal events. The suit may be complemented by a dress shirt, tie, and polished shoes to complete the look. Formal suits come in various styles, including two-piece and three-piece options, which include a vest. Common colors include black, navy, and gray, while patterns like pinstripes or checks can add a touch of personality. Proper fit and quality materials are essential for a polished appearance.