These replacement dust bags are compatible with iRobot Roomba 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+ models, ensuring a proper fit and reliable performance for optimal cleaning results. Over 99.9% filtration performance: constructed with 4 layers of high-strength precision fabric, including 2 layers of superfine melt-blown fiber filter and 2 layers of non-woven fabric. Captures over 99.9% of dirt, dust, and hair particles. Durable and well-sealed: features an 8mm widened seam design for enhanced durability and structural integrity. Each bag can hold up to 30 bins of dirt, debris, and particles as small as 0.3 microns when used with compatible automatic dirt disposal systems. Upgraded self-locking collar design: improved self-locking collar helps prevent dust leakage and reduces the risk of secondary contamination during disposal. The secure closure minimizes mess when replacing the bag. Quantity: 10PCS or 12PCS. Color: As shown in picture. Material: Non-woven fabric. Package Contents: 10 or 12 dust bags. Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.