An academic cap, often referred to as a mortarboard, is a traditional headwear worn during graduation ceremonies. It typically features a flat, square top and a tassel that hangs from the center. The cap symbolizes the achievement of academic success and is commonly worn by students receiving their diplomas or degrees. The mortarboard is usually made of black fabric, although variations in color may represent different fields of study or institutions. Graduates often toss their caps into the air at the end of the ceremony, marking a celebratory moment as they transition from students to alumni.