Vacuum cleaner bag, set of 12-High Quality and Durable MaterialThe new dust bag consists of 2 layers of fine fiber filter and 2 layers of non-woven fabric, the high density fabric ensures that the irobot dust bag is absolutely durable and will not be punctured by sharp debris inside, it can effectively filter 99.99% of dirt and dust particles. 100% CompatibleThe dust bag is compatible with iRobot Roomba i7 i7+ i7 Plus i3 i3+ i4 i4+ i4 Plus i6+ i8 i8+ j7 j7+ j7 S9 S9+ S9 Plus E5 E6 E7 vacuum cleaners, suitable for iRobot Roomba i-/s/j series replacement bags, perfectly replace the original bags. Design Improved anti-leakageThe improved dust bag can close automatically for added convenience and ensures that all vacuumed dirt is contained in the dust bag, reducing the risk of air leakage and maintaining suction power for a longer period, effectively protecting your iRobot Roomba. Installation and replacementThe i7 dust bag is easy to install in the same way as the original accessory. Simply remove the used dust bag and replace it with a new one. It is recommended to replace the bag every 2 to 3 months to maintain performance and extend the life of your vacuum cleaner. Large Capacity You will receive 12 high-quality dust bags. The replacement dust bag for irobot roomba i7 has a large capacity, and you won't have to worry about vacuuming for at least two weeks.