A graduation cap, also known as a mortarboard, is a flat-topped academic cap worn by graduates at universities and colleges. It is typically made of black velvet or felt and has a tassel that hangs down from the center of the crown. The tassel is usually the same color as the cap and gown, and it is often decorated with charms or other embellishments.
There is a long history of wearing graduation caps, dating back to the Middle Ages. At that time, scholars wore caps to signify their status as students and graduates. The mortarboard cap became popular in the 16th century, and it has remained a staple of academic dress ever since. Today, graduation caps are worn by graduates of all levels, from high school to doctoral degrees.