General description Dust Bags for 2499/7490/8290, Atvel R80, and Kabum Smart 900 Robot Vacuum Cleaner are made of high-quality non-woven fabrics. These dust bags are essential for maintaining optimal performance of your vacuum cleaner. Technical specifications Material: Non-woven fabrics Package Contents: 10 dust bags Measurement allowed error: +/- 1-3 cm Usage As part of normal maintenance, these dust bags can be easily removed and replaced. It is recommended to replace spare parts every 2 to 3 months to ensure the machine operates at its best performance. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.