General description The 8pcs-Fits Vacuum Cleaner Bag is designed specifically for iRobot Roomba models i3, i4, i6, i7, i8, s9, and j7. Made from premium materials, these high-quality bags ensure effective filtration and durability, making your cleaning experience more efficient. Technical specifications Material: 2 layers of high-strength ultra-fine molded fiber filters Additional layer: 2 layers of non-woven fabric Installation Precisely sized to fit iRobot models, allowing for quick and easy installation. Replacement methods are identical to the original accessories, ensuring a hassle-free process. No installation issues to worry about. Usage Recommended to replace the vacuum cleaner bag every 2 months for optimal performance. Effectively reduces the penetration of dust, pollen, and other allergens into the air. The practical hinged closure keeps dust and dirt securely inside the bag, protecting the vacuum's interior and motor. Regularly changing the filter bags helps maintain