About this item Compatibility: This dust bag is only compatible with Roborock Q Revo, Qrevo MaxV, S8 MaxV Ultra, and S8 Max Ultra robot vacuums. It is not compatible with other devices. Please confirm your device model before purchasing. High-Quality Materials: The bag is made of three layers of ultra-fine meltblown fabric and two layers of non-woven fabric, with heat-sealed edges to ensure no risk of leakage. It is durable and wear-resistant, effectively resisting damage from sharp debris. 2024 Upgraded Large Capacity: Our dust bag measures 13cm/5.12in 11cm/4.33in 20.5cm/8.07in, with an approximate 3L capacity that can hold up to 8 weeks of dust. The bag captures 99.7% of small particles, effectively preventing them from floating back into the air. It is particularly suitable for households with pets. Product Includes: Includes 14 disposable robot vacuum dust bags with a 3L capacity each. Each bag can hold up to 8 weeks of debris (depending on the vacuum?s cleaning frequency and the amount of dust in your home). The set is designed to meet your replacement needs for 10-12 months. Premium Service: We are committed to providing you with excellent customer service. If you are not satisfied with the product or have any questions, please feel free to contact us, and we will get back to you as soon as possible to resolve your issue.