Compatible Models：Dust bag replacement accessory for Roborock S7 Maxv ultra / S7 Pro ultra / Q7 Max / Q7 Max + / Q5 + Robot Vacuum Cleaner. 4-Layer High-Efficiency Filter Membrane：The vacuum cleaner is made of 2 layers of non-woven fabric and 2 layers of melt-blown cloth filter membrane, which has good sealing and durability. The sealed dust bag can effectively filter 99% of fine particles, leaving dust, hair, dirt and other debris in the dust bag. dust to keep the room clean. Unique Design：Dust bags for Roborock S7 MaxV Ultra is designed with high quality plastic self-seals when removed to prevent dust leakage, is easy to install and the convenient sliding ring ensures hygienic disposal of the full bag. Large Capacity：Fully compatible replacement dust bag for Roborock S7 MAXV Ultra: 16cm/6.3""×13cm/5.1""×15cm/5.9"" in size, 3 liters capacity, captures up to 8 weeks of dust, dirt, and pet hair. To get the best performance from your robot, please clean and replace parts on time.