A button-down shirt is a type of dress shirt characterized by its collar, which has buttons that fasten it to the shirt. This design helps keep the collar in place and adds a polished look. Button-down shirts are often made from various materials, including cotton and linen, making them suitable for both casual and formal occasions. These shirts come in various styles, colors, and patterns, allowing for versatility in fashion. They can be worn with jeans for a relaxed look or paired with dress pants for a more formal appearance. Button-down shirts are popular among both men and women.