describe Perfect Compatibility: The vacuum cleaner bag is suitable for Roborock S7 S7Plus S7Max T7s T7s Plus, the bag is suitable for Roborock S7 automatic emptying station. HIGH QUALITY: The filter bag accessories are made of multiple layers of high-quality microfleece, which ensures maximum filtration performance and prevents fine dirt and dust from entering the air. Self-closing design: The vacuum cleaner accessories adopt a design that automatically closes when disassembled to prevent dust leakage and ensure that dust and dirt are firmly locked in the bag after use. Easy to install: The 1.8L capacity dust bag is easy to install, and the practical collector ring ensures hygienic handling of the entire dust bag. Package Contents: 12 Bags filters for Roborock S7 accessories.