The original pullover fatigues have been around since the 1910s and were replaced by denim fabrics in the 1930s. The comfort of the denim fabric's high productivity and durability led to a slow pace of development, as people did not realize the need to invest in developing equipment. In order to reproduce the light colors of the time, the indigo rope-dyed warp threads were dyed multiple times. By layering lighter colors, we were able to achieve the deep, pale blue faithful to the original.