The gat, a traditional Korean hat, was an essential item of attire for men whenever they went out in public. It was referred to by several different names including Heungnip, Chillip, or Pyeongnip. Gannil, the method of making these hats with fine bamboo strips or horsehair, involved a complex series of techniques in which the chongmoja (the cup-shaped upper part of the hat) and the yangtae (its brim) were produced first, and then combined in a process called ipja, which consisted in covering the headgear with silk fabric and lacquering. The demand for Korean bamboo hats declined sharply after the proclamation of the topknot decree and the introduction of Western culture including western-style clothing in the 20th century. The heritage is currently preserved in Tongyeong, Yecheon and Jeju.