Made of high quality material, professional and to use, long service life. Fine preliminary Filter traps larger particles in the air like dust, hairs, pet fur, lint and more recommended replacement cycle is every 2-3 momth to maintain the best performance of the machine 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 performance of the sweeper, while reducing the penetration of dust, pollen and other As part of normal maintenance, Easy to remove and replace. Colour:sea blue Material:plastic Package Contents: 3 x HEPA Filter 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.