When the sweeper is working, the roller brush is rotated and the floor is thoroughly cleaned.It can be easy to remove and replace as part of routine maintenance.Often replace the filter to help make indoor air more fresh ,helps reduce household odorsTrue HEPA Filter captures 99.97% of dust and allergens as small as .3 Micrometre such as household dust, pet dander, mold spores and plant pollens.The side brush cleans deep corners better.Colour Photo ColorMaterial plastic + fiberPackage Contents 1 x Rolling brush3 x Filter6 x Dust bag6 x Side brush6 x WipeOnly the above package content, other products are not included.Note Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.