Often replace the filter to help make indoor air more fresh. Side Brush:it not scratch the floor and furniture design, easy to collect the hair material, in use. Filter helps reduce household odors. Keep your home clean by changing the filters frequently - once every month or two, depending your usage. Colour: blue + black Material: plastic Package Contents: 1 * main brush 4 * HEPA filters 6 * side brushes 2 * mop cloths 1 * cleaning tool Only the above package content, other products are not included. Note: Light 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.