A button-down collar is a type of shirt collar that features small buttons on the tips, allowing the collar points to be fastened down to the shirt. This design helps keep the collar in place and gives a neat, polished look. It is commonly found on casual and semi-formal shirts, making it a versatile choice for various occasions. Originally popularized by the Polo players in the early 20th century, the button-down collar has become a staple in men's fashion. It pairs well with blazers, sweaters, and even ties, making it a favorite among those who appreciate a smart yet relaxed style.