【Compatible with】The replacement bags are only suitable for the Roborock S7 MaxV Ultra / S7 Pro Ultra / Q7+ / Q7 Max+ / Q5+ vacuum cleaner. Please confirm your model before ordering. 【Manufacturing】Not all parts are original. From the OEM factory, the materials used, the workmanship and the quality are comparable to the originals. 【Premium Materials: The filter bags are made of a high-quality melt-blown fiber filter layer and non-woven fabrics, which effectively filter 99% of dust particles and allergens up to a size of 2.5 µm. 【Large Capacity】Dust bag size 16 cm/6.3' x 13 cm/5.1' x 15 cm/5.9', The disposable 3L dust bag captures dust, dirt, and pet hair for up to 8 weeks. 【Package Contents】8 x dust bags. Provides up to 12-16 months of protection for your vacuum cleaner. The service life may vary depending on the usage environment and frequency of use.