Tokaido Japan claims this is a western invention. I think I've read the same thing elsewhere too. " I heard that one should never wash a belt. Is this true? No. If your belt is dirty then you should put it into a "sweater bag" and wash it in cold water. As with the uniform, hang it out to line dry immediately after washing. I heard that one should never let a belt touch the ground. Is this true? This rumor seems to have been created outside of Japan, probably in the USA, where many people claim that their nation's flag should never touch the ground or then must be discarded. Although one should try to keep the belt clean and all articles neat, if a belt touches the ground, it is not considered such a bad thing, per se. Throwing a belt around disrespectfully, however, is definitely looked down upon by traditionalists."