Rank in Judo a red-white paneled belt, and judokas who have attained the 9th Dan may wear a solid red belt. In some countries a red belt is used between the white and yellow belts to signify full membership of the judo club or the countries judo association. More commonly the red belt is, however, reserved only for 9th and 10th Dan practitioners. In some countries junior practitioners have an extra system in place to show the progress in between two kyū grades. The sub rank is symbolized by a small piece of fabric on the end of the belt. The colour of
Rank in Judo are yet to attain that level and who hold grades. Those who hold "dan" grades are collectively termed (literally "person who has dan") and those with "kyū" grades are , literally "person without dan". This ranking system was introduced by Kanō Jigorō, the founder of judo, in 1883. However, the current system is not the original one, but based on Kanō's last system introduced between 1926-1931, with some modification shortly after Kanō's death in 1938. The first "dan" grades were awarded to his students Saigō Shirō and Tomita Tsunejirō. Since then it has been widely adopted by modern martial arts.