A Henley shirt is a type of casual top characterized by its round neckline and a placket with a few buttons. It typically has long sleeves, but short-sleeved versions are also available. The shirt is often made from cotton or a cotton blend, making it comfortable and breathable for everyday wear. Originally designed as an undergarment for rowers in the 19th century, the Henley shirt has evolved into a popular fashion item. It can be worn alone or layered under jackets and sweaters, making it versatile for various occasions, from casual outings to relaxed office settings.