Practicality: 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 optimal cleaning performance. [Over 99.9% Filtration Performance] Made of 4 layers of high-strength precision fabric, including a 2-layer superfine melt-blown fiber filter layer and 2-layer non-woven fabrics. Captures over 99.9% of dirt and hair. [Durable and Well-Sealed] Features an 8mm widened seam design for enhanced durability. Holds up to 30 bins of dirt, debris, and particles as small as 0.3 microns. [Upgraded Self-Locking Collar Design] Improved self-locking collar helps prevent dust leakage and reduces mess during disposal compared to pull-close designs. Quantity: 10PCS or 12PCS Color: As shown Material: Non-woven fabric Package Contents: 10 or 12 dust bags Note: Light reflection and display differences may cause slight color variations. Measurement may vary by +/- 1-3cm.