Durable Materials: The vacuum bags are made of durable materials and have a large capacity, has a strong sealing property to ensure that all the collected dirt is contained in the vacuum bag High Quality Material: Made of high quality materials, environmentally friendly materials, soft and durable to use. Replace the old, broken or dirty dust bag and improve the cleaning ability and effect of the cleaning robot Fitment: They are compatible with Rowenta ZR200540 ZR200720 & RO64XX RO63XX RO68XX RO39X Easy to Use: Simply remove the complete dust bag and install the new dust bag in place along the slot of the holder, very easy to replace and maintain Vacuum Bags: You can free your hands and never have to worry about frequent replacement.