Made of pleasant materials for sturdiness Empty the tank soon and effectively with out releasing risky dirt to the environment As a part of ordinary maintenance, it can be smoothly eliminated and changed It is better to change the spare components every single 2 to 3 months to keep the mechanical device running at functionality Fit For Q11 Robot Vacuum Cleaner size:About 140x140mm Material:cloth colour:White Package Contents: five * Dust Bags Only the above equipment content, different merchandise aren't included. Note: Light reflection and different reveals could cause the color of the item in the photo somewhat different from the genuine thing. The size allowed error is +/- 1-3cm.