iRobot Roomba 500 Series AeroVac Upgrade Kit - Black
The Roomba 500 Series AeroVac upgrade kit makes your Roomba more effective and even more convenient.  The powerful AeroVac bin is the latest breakthrough in cleaning technology.  It maximizes airflow to not only pull additional hair and debris off Roomba's brushes, but also guide debris to the back of the bin, allowing you to empty it less often.