The dust bag is made of melt-blown fabric and non-woven fabric, combined with the cleaning station can effectively capture 99.7% of ultra-fine dust down to 0.3 tiny particles. -Easy to install and remove, no need to spend extra energy and time. In order to keep your robot running at its best, please clean and replace parts in time. If you have allergies and pets , it is recommended to replace the dust bag every 2-3 weeks. Easy to clean, Help to remove dirt, dust and trash on the floor. 100%Made of high-quality materials, environmental friendly materials, soft and to use. Colour:White Material:non-woven fabric Package Contents: 3 x Dust Bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.