[Compatible Models] Perfect for 2290 UltraRobot Vacuums. Made of high-quality materials, environmental friendly materials, soft and to use. [Auto Lock] - It lock automatically when you lift the dust bag, completely sealing the dust bag inlet to dust and dirt stay inside the bag. [Good Sealing] - The dust bag is made of melt-blown fabric and non-woven fabric, combined with the cleaning station can effectively capture 99.7% of ultra-fine dust down to 0.3 tiny particles. [Tips for Use] - In order to keep your robot running at its best, please clean and replace parts in time. If you have allergies and pets , it is recommended to replace the dust bag every 2-3 weeks. Energy saving: By using dust bags, you can extend the service life of the vacuum cleaner and reduce the cost of cleaning equipment replacement. Type:Vacuum Cleaner Accessories Compatible Models:For 2290 Ultra Model number:05661 Colour:White Material:Non-woven fabrics Package Contents: 22 * Dust Bag Only the above package