1.Thicken sea palmer design, with HEPA filter effectively block small dust as 0.3 microns2.Effective filtering dust, for preventing the dust particles into the motor chamber and damage to the motor at high speed, to ensure the service life of vacuum cleaner3.Able to filter out the harmful parasites may cause respiratory tract irritation4.In order to ensure effective, filter should be replaced every six months5.To bring you a clean environment and fresh air without any allergic source .colour: white+blackMaterial: ABS+HEPAPackage Contents: 6*filterOnly 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.