Hoover’s Activ range offers innovative cordless bagged and bagless cylinders. Powered by Lithium battery technology, Activ offer excellent cleaning performance on both hard floor and carpet with the freedom and reach of a cordless product. Synthesis Activ combines cordless technology with the great features of bagless cylinders. The Synthesis range is designed with allergy sufferers in mind. With HEPA filters to help purify the air and silver ion treated bin to restrict the proliferation of bacteria.