What is a "polo shirt"?

A polo shirt is a type of shirt typically made of knitted cotton with a collar, short sleeves, and two or three buttons at the neck. It is often characterized by a more structured and formal look than a T-shirt but less formal than a dress shirt. The origins of the polo shirt can be traced back to the sport of polo, which required a comfortable and breathable shirt for players. Today, the polo shirt is a popular choice for both casual and semi-formal occasions and is often embroidered with logos or designs for use in uniforms or as a fashion statement.