It is recommended that you replace your vacuum cleaner accessories every 2-3 months Made of high-quality melt-blown non-woven fabric and hydrophilic spunbond fabric, the dust is locked in base, so that you do not need to worry about fine dust flow when using. Multiple layers of high-quality materials maximum dust collection capacity while helping to better protect your vacuum cleaner Dust collection bag with microfiber due to good material filtration, sticky seals cover intake, so you do not have to worry about secondary pollution caused by dust leakage. Vacuum cleaner bags have a 5-layer filtration system with static electricity that captures and holds 99.97% of dirt, pet dander, etc., helping to keep your house truly clean and improve air quality in your home. Please note: the physical slightly color difference or difference, does not affect use, please do not mind, thank you! Colour:Photo Color Material:cloth Package Contents: 18 x Dust Bag Only above package content, other