[1][2] Also known as a jokdu or jokgwan, it consists of an outer crown covered with black silk, and an inner which is filled with cotton and hard paper.
[3][4][5] Jokduri can be used to display the wearer's social status by being adorned with accessories made from gold or silver.
[4] It is said that the jokduri was derived from the Mongolian woman's cap for outing, the gogori (姑姑里), in the late Goryeo period.
It began to be used in that period as intermarriages between Goryeo and the Yuan dynasty of China happened.
In 1788, the 12th year of King Jeongjo's reign, he published an interdictory decree on jokduri, a prohibition against excessive usage of cloisonné decorations, and the designation of black fabrics for the inner material such as cotton and bamboo.