Our ultra-light, powerful battery-powered backpack vacuum BVL 5/1 Bp is the first backpack vacuum to not only be ultra-lightweight, but simultaneously delivery superior cleaning capability. Thanks to an innovative EPP (expanded polypropylene) material, the carrying weight on the back is slightly under 10 lbs. Whether in the theater, in a plane, in buses and trains, for office cleaning or on stairs, the powerful backpack vacuum cleaner with a container capacity of 1.32 gallons makes full use of its advantages for cleaning tasks in the narrowest of spaces.