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 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 and hair. [Durable and Well-Sealed] Features an 8mm widened seam design in the ing process for enhanced durability. 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. Easy to replace without scattering dust. Quantity: 10PCS or 12PCS Color: As shown Material: Non-woven fabric Package Contents: 10 or 12 dust bags (no other items included) Note: Lighting and display differences may cause slight color variations. Measurement may vary by +/- 1-3 cm.