HEPA filter is made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning per compatiblemance of the sweeper, while reducing the penetration of dust, pollen and other allergens into the air you breathe The mop cloth has good softness, while cleaning the dirt, it also protects the floor from being scratched. Strong water absorption, easier to clean and reusable Fine preliminary Filter traps larger particles in the air like dust, hairs, pet fur, lint and more High-efficiency activated carbon filter absorbs household odors from pets, cooking, smoking, wildfire, and harmful VOC's. Compatible with model: compatible Dreame Bot X30Pro compatible Dreame Bot X30Pro Ultra compatible Dreame Bot X30Pro Plus Material: superfine fiber : grey Package Contents: 6 x Mop Cloth / 10 x Mop Cloth 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.