Pack includes three dirt disposal bags Can hold up to 75 days of dirt and debris Compatible with Roomba 105 Vac robot + AutoEmpty dock, Roomba 105 combo robot + AutoEmpty Dock, Roomba Plus 405 combo robot + AutoWash dock, Roomba Plus 505 combo robot + AutoWash dock, and Roomba Max 705 Vac robot + AutoEmpty dock It's important to replace your robot accessories with iRobot genuine parts. Genuine parts are designed and manufactured to the exact specifications set by iRobot. This ensures that each part not only fits perfectly but also operates in harmony with the rest of the robot, maintaining the designed performance standards. Non-genuine parts may choose to cut corners when it comes to material selection, method of fabrication, and quality control