The new backpack vacuum cleaner BV 5/1 can be carried comfortably on the back like a rucksack above all because of its low weight of just 5.3 kg. The BV 5/1 is particularly used where it is too thight for conventional vacuum cleaners: Between seat rows of cinemas and theatres, in buses, trains and airplane cabs, in stairways of hotels and offices as well as in strongly transferred areas.