This is an overview of KTSIM vacuum cleaner bags for some iRobot Roomba vacuum cleaner What you get (Figure 1, 2)8. Dust bags are compatible with most Roomba i and s series robots.1 cleaning brush. I have two Roomba (i7+ and s9+). Different cleaning robots but they use the same cleaning/charging station. Up to this point I have only used OEM (Original Equipment Manufacturer) parts; However, I don't mind trying third-party parts as long as they meet my expectations. I received them the other day and since the bags on both of my cleaning/charging stations were almost full I replaced the original bags with two of these and sent them in for cleaning. Operation (Fig. 3) First, the bags sit firmly on the floor and enter easily. The two floors they're on are large, and it typically takes Roomba twice (with charging) to do its job. Before I started doing this, I cleared the area where the pockets are. That way, when Roomba empties its dirt, I can tell if there was any leakage. After they came back twice, I checked inside and no dust came out. I will continue to follow them over time and if there are any issues I will come back and update this review. However, if they continue to work like this, I may have just gotten a new, cheaper vacuum bag.