[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. [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. [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. Easy to replace: dust bag design is simple and easy to use, easy to replace, no special tools or professional skills are required. : high-quality dust bag material has a long service life, can be repeatedly cleaned and reused. Energy saving: By using dust bags, you can extend the service life of the vacuum cleaner and reduce the cost of cleaning equipment replacement. Model:For Y1 Plus Type:Vacuum Cleaner Accessories Quantity:12PCS Colour:White Material:Non-woven