Feature:1. [EVA Sponge] Sealed with high quality EVA sponge and fits perfectly, so that dust has nowhere to escape, to meet your various need.2. [Saving Time And Energy] Vacuum cleaner dust bag only need replace once a month, do not touch dirty things, effectively saving time and energy.3. [Thickened And Hardened] With three layer cardboard, which is thickened and hardened, not easy to deform, so you can use it with confidecne.4. [Keep Room Clean] Vacuum cleaner dust bag is exquisite in workmanship and can effectively collect dust and keep your room clean.5. [Fitment] Vacuum cleaner dust bag is fit for VIOMI S9, fit for M7 Pro, can be perfectly compatible with your machine.Specification:Item Type: Vacuum Cleaner Dust BagMaterial: EVA sponge + cardboardFitment: Fit for VIOMI S9, fit for M7 ProWeight: Approx. 250g / 8.8ozPackage List:6 x Vacuum Cleaner Dust Bag