Si Wilson wrote:
Why wash it? You donīt sweat on it, so it doesnīt need washing!!!! Forget the importance of it holding your energy ... it doesnīt get dirty! Mine has never been washed in 5 years I have had this belt and it is not dirty, smelly, or anything else that is unpleasent.
Either your sweat glands or your nose has packed up! Even if you don't reckon you sweat, other folk do and you may be landing in their puddles from time to time, so yes, your belt does get dirty. Perhaps a lab analysis would convince you?