Rubbermaid Hygen Pulse Backpack For F6350 & F9685: Rubbermaid Pulse Mop Backpack: Combine Rubbermaid Pulse Mop, single sided or double sided, with the high capacity Flow backpack system, allowing user controlled release of solution. Help reduce labour costs and improve worker productivity and well-being. Ideal for spot cleaning and to clean anywhere you can not take a bucket ( such as stairs, tube stations, trains etc). Holds 5.6litres fopr cleaning 820 m2 of floor surface. 7.5cm diameter opening makes refilling and easy.