These filters and brushes are perfect for my Rumba7 robot. The cost difference was huge and I didn't have to buy any extra parts I didn't need. However, I want to buy in the US and chose this retailer because I thought the name might be "local". I tried to research the retailer but encountered obstacles. When the product arrived early, it had a clear "Made in China" stamp on it. Disappointing but quality replacement. After 3 months: The filters appear to be exactly the same as the Rumba filters; but it seems to me that they also do not hold dirt. I had to change them every month while the original lasted three months. Maybe it's because I don't collect as much dog hair now, even though they're huge they pick up a lot more fine mud.