Twinclean is the world's first cyclonic bagless vacuum cleaner that helps you clean its own hepa filter. All vacuum cleaners need clean filters to perform at their best. Only Twinclean helps you clean its own main filter as needed, so there is less mess and fewer hassles for you. Regardless of the Twinclean you choose, they all come with an exhaust filter that simply rinses clean so there's never any need to buy replacements.