A. Practicality: These replacement dust bags are compatible with iRobot Roomba i, I, E & J Series models including i1, i1+, i3, i3+, i4, i4+, i5, i5+, i6, i6+, i7, i7+, i8, i8+, j5, j5+, j6, j6+, j7, j7+, j8, j8+, j9, j9+, s9, s9+, ensuring a proper fit and function for cleaning performance. B. Filtration Performance: Made of 4 layers of precision fabric, which includes a 2-layer superfine melt-blown fiber filter layer + 2-layer non-woven fabrics. Over 99.9% of dirt and hairs can be collected. C. Durability and Sealing: In the stitching process, a widened 8mm seam design is adopted to enhance firmness. The automatic dirt disposal irobot bag can hold 30 bins of dirt, debris, and other particles as small as 0.3 microns. D. Self-locking Collar Design: Compared with the old pull-close design, the upgraded self-locking collar design helps prevent dust leakage and avoid secondary contamination. It also reduces dust dispersion when changing the bag. Quantity: 10PCS/12PCS Colour: As Shown Material: Non-woven fabric Package Contents: 10 * dust bags / 12 * dust bags 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 to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.