The fully organically grown fox cotton revived in 1989 by the American entomologist Sally Fox is used for the yarn. Fox cotton has the true color of the plant itself before it turns white for human convenience. Made by Japan's first shuttle loom "G3", which has been handed down as a legend. By mastering the G3 loom that is difficult to handle and poor production efficiency, Studio D'Artisan created rugged denim as a workwear of the old time.