【Compatible with】The replacement bags only apply to Roborock S7 MaxV Ultra / S7 Pro Ultra / Q7+ / Q7 Max+ / Q5+ vacuum cleaner station. Please confirm your device model before ordering. 【Production】Not all parts are original. From the OEM factory, the materials used, workmanship and quality are comparable to the original ones. 【Premium Materials: Filter bags are made of a layer of blown fiber filter. High quality melting state and non-woven. fabrics, which effectively filter 99% of dust particles and allergens up to 2.5 µm in size. 【Large Capacity】 Dust bag size 16 cm / 6.3" × 13 cm / 5.1" × 15 cm / 5' 9', the 3L disposable dust bag captures dust, dirt and pet hair for up to 8 weeks.< / p> 【Included in delivery】8× dust bags. Provides up to 12-16 months of protection for your vacuum cleaners. Usage time may vary depending on the environment and frequency of use. Sold by Grid Cool Store