Features the revolutionary Tandem Air System with dual motors that work together to deep clean thick carpet yet gently clean bare floors and areas rugs. Multi-stage filtration includes a HEPA media filter and now a granulated charcoal filter, upgraded to trap allergens and odors even better. A self-sealing, charcoal-infused HEPA media bag traps 99.97% of debris that is 0.3 microns or larger, and makes bag changing simple and clean.