A Henley shirt is a type of casual top characterized by its round neckline and a placket with a few buttons. Typically made from cotton or a cotton blend, it offers a comfortable fit and is often worn as a layering piece. The shirt can come in various styles, including short-sleeved and long-sleeved versions. Originally designed as an undergarment for rowers in the 19th century, the Henley shirt has evolved into a popular fashion staple. It is versatile enough to be worn on its own or under jackets and sweaters, making it suitable for various occasions, from casual outings to relaxed office settings.