The filter can be removed and reinserted quickly and easily. Clean reusable filters regularly to maintain their performance. For best performance, we recommend cleaning the filter once a month and replacing it every 3 months. The built-in filter can protect the vacuum cleaner motor from pollution and temperature rise caused by related operations. It can also prevent damage to the motor caused by improper use, thus greatly improving its service life. The filter is made of high-strength and environmentally friendly PET material. Simple, tool-free assembly and high filtration performance, easy to install and replace. Material: ABS + cotton Color: as shown Package Contents: 8 internal filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.