Jong Song Ho, room chief of the Folklore Institute of the Academy of Social Sciences, 36, said that Korean fighters donned not only armors but fatigues made of paper in battles for a long period. He continued:

According to "Korean Geography" compiled in 1481, kapuiji (a kind of Korean paper) was used for making arrow-proof fatigues in battles. As it was heavy for a fighter to wear fatigues made of iron sheets for protecting himself from arrows, paper was used instead for the same purpose. They, though light in weight, were as strong as armor. Fatigues made of paper are believed to be used in the period before the compilation of the book.

In those period Koreans made kapuiji from paper mulberry and used it for producing arrow-proof fatigues called jigap.

In order to produce the above-said fatigues they went through the following process: Kapuiji was cut into required shapes and sizes or folded several times to obtain the shape of the fatigues. They were tied with deerskin strap and carefully lacquered horizontally, lengthwise and diagonally before getting them dry outside. This process was repeated two or three times.

There were several kinds of arrow-proof fatigues made of paper like jichalgap, jiphoomsimgap and jijebaegap. Jichalgap was made of small pieces of folded layers of paper. Jiphoomsimgap was arrow-proof vest made of paper and fabrics. Jijebaegap was made by quilting 10-15 layers of paper.