Perfect compatibility: compatible with for i7 i7+ (i7556)/ i3 i3+ (i3552)/ i8, i8+/ i6+(6550)/ S9 S9+/ j7 j7+/ i4 i4+ robot vacuum cleaner. Suitable for all models that have a Clean Base automatic suction station, works like the old, perfectly replace old dust bag, HEPA filter. High-efficiency filter: these replacement vacuum cleaner bags for filter more than 99% of all fine dust particles, the dirtlock closure mechanism ensures that the dust remains in the bag when disposing of the replacement for vacuum cleaner bags. This vacuum cleaner HEPA i7 filter is made with high-strength and environmentally friendly materials. Can remove 99.97% dust and dirt. High quality: each replacement bag is made of 4-layer fabric: 2-layer superfine melt-blown fibre filter layer and 2-layer non-woven fabric, the sealing technology is well upgraded, reducing the risk of leakage and bursting. Easy installation: the i7 bag, filter is easy to install and the practical extendable cardboard plate ensures hygienic disposal of the full bag, good suction performance with these dust bags, even when the dust bag fills. Box contents: 8 pieces accessories for i7, also always have a dust bag at hand, regular maintenance ensures that your robot vacuum cleaner from the i and s series runs at performance. Colour:As Shown Material:Plastic Package Contents: 4 * dust bag 4 * filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.