Dual counter-rotating extractors incorporate a durable rubber tread design that grabs and breaks down dirt and debris from any floor type.Brushless design is virtually maintenance-free.Innovative HEPA filter designs capture substantially more dust, pollen, pet dander, and other allergens.Side brush allows your Roomba to reach deeper into the carpet for more thorough cleaning. Debris ExtractorsDual counter-rotating debris extractors incorporate a durable rubber tread design that grabs and breaks down dirt and debris from any floor type.Side BrushSide brush allows your Roomba to reach deeper into the carpet for a more thorough cleaning.Hepa FilterHepa filter substantially increases the amount of dust, pollen, pet dander and allergens captured by the innovative filter design. Whats in the Package: