Plastic vacuum cleaner, lightweight and flexible, easy to use design, just picked up with your hand gently press, would it not be a dust extraction using multiple filtering devices, dust will not only be thoroughly sucked clean, and ensure the escaping air is clean not only sofas, curtains, also gains ceiling, computer keyboard, beds of dust on the surface as well as a variety of household appliances. Lightweight and flexible, easy to use design, just picked up with your hand gently press, would it not be a vacuum.