Perfect compatibility: These replacement bags are compatible with the Roborock Q7 Max, Roborock Q7 Max+, Roborock Q5+, Roborock S7 MaxV Ultra, and Roborock S7 Pro Ultra Robot vacuum cleaner models. High-quality material: The bags are made of high-quality non-woven fabric and cardboard, allowing for quick and effective emptying of the storage tank without releasing harmful dust into the environment. Quality service: If you have any issues, please contact us via email. We offer the highest quality products and high-quality customer service. Note: This is not an original Roborock product and is not subject to Roborock warranty. The Roborock brand name and logo are registered trademarks of their respective owners. The use of the Roborock brand, model, or part designation for this product is solely for demonstrating compatibility.