The package contains only one vacuum cleaner bag [perfect compatibility] vacuum cleaner bag replacement accessory for roborock S7 maxv ultra / S7 pro ultra / Q7 max / Q7 max+ / Q5+ robot vacuum cleaner. (please confirm your robot model before purchasing!) [high-quality materials] the filter bags are made of high-quality fiber and non-woven fabric filter layer, so you don't have to worry about leakage, so everyone can be sure to use them and collect debris, hair and dust in large capacity. [large capacity] vacuum cleaner bag size 18cm/6.3 \" × 15cm/5.1 \" × 12CM / 5.9 \" disposable vacuum cleaner bag with 3L to catch dust, dirt and pet hair for up to 8 weeks. For optimal performance of your robot, clean and replace parts in time. [Package included] 1 piece vacuum cleaner bag for roborock S7 maxv ultra. Protects your vacuum cleaner for up to 12 - 16 months. The lifespan may vary depending on the environment and frequency of use.