Often replace the filter to help make indoor air more freshSide Brush:it will not scratch the floor and furnitureUnique design, easy to collect the hair material, durable in use.Filter helps reduce household odorsKeep your home clean by changing the filters frequently - once every month or two, depending your usage.Colour: blue + whiteMaterial: plasticPackage Contents:1 x plush roller brush16 x filters10 x side brushesOnly 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.