Premium QualityThe dust bag is made of microfiber, which can capture dust, dander, allergens and other tiny particles as small as 0.3 microns, with a filtration efficiency of up to 99.97%. Because the material filters well and the sticky seal covers the air intake holes, you don't have to worry about secondary pollution caused by dust leakage.Selflocking automatic sealing ringOnce all dust and debris are sucked into the vacuum cleaner, the selflocking automatic sealing ring ensures that these particles are not released back into the air. After turning on the vacuum cleaner, the ring will automatically seal to ensure that all dust is sealed in the bag.Easy to InstallSimply remove the old AirClean 3D highefficiency gn bag or filter, throw it away and install the new replacement GN vacuum cleaner bag. It is recommended to replace the GN vacuum bag every 23 months.Great Value PackageThis package includes 16*dust bags, 5*filter bags, 5*filter cotton, 1*cleaning brush.