Applicable models: HEPA filter set for Xiaomi Mop 2S / Mop P / Mop Pro / STYJ02YM / XMSTJQR2S Robot vacuum Material: Made of high-quality HEPA filter paper material, it does not deform when wet and is not easy to break. It has filtering function and can optimize the air in your home High-efficiency filtration: The air filter can filter 99.98% of impurities, dust and other particles in the air, and can easily filter particles as small as 0.3 microns Protect the motor: It can filter the air entering the motor during the operation of the motor to prevent impurities from entering the motor and affecting its operation Washable: It is convenient for you to perform simple cleaning after use. The air filter is made of washable material. If the surface is dirty, it can be rinsed with clean water and used again after drying Replace in time: As the use time increases, the air filter will become blocked or the filtering effect will be significantly reduced. It is recommended to replace the new air filter in time Air filter set: 6 x filter, 1 x cleaning brush