Darts are used in sewing to shape fabric to the body by curving straight fabric. There are two main types of darts: single pointed darts which are narrow at one end and wide at the other, and double pointed darts which are narrow at both ends. Different types of darts are used in different areas like the bust, shoulders, elbows, and waist. Standard darts are the most common type and help add shape, while darts can also be converted to ease to allow for a looser fit. Serged darts are useful for knit fabrics. Darts are an important technique in tailoring for creating good fit and design elements.