Indigo dying is a traditional method of coloring in Japan that has been implemented by modern designers in recent times. However, the majority of garments dyed in indigo dyes were made from cotton and not nylon. To defy the odds, Porter Classic managed to create the Super Nylon line by adding indigo tones to the nylon bags. As you can see, the finished products are beautifully stained in rich indigo color, slightly different from cotton items. To top it off, Porter Classic filmed the complete dying process, which can be viewed in the following video.