High-quality materials: high-quality materials, safe and environmentally friendly, more durable. Remove odor: air purification filter, in addition to formaldehyde odor, purification of suspended matter. Effective filtration: Efficient filtration of particulate matter such as PM2.5, ash layer/hair, pollen/fines, etc. Safe and secure: Choose the high-efficiency filter material to make you safer and more assured. Applicable models: For millet 1 generation 2 generation pro air purifier filter. Purple version: Sterilization, disinfection, anti-mildew Material:Composite material colour:Purple Package Contents: 1 x Air purifier filter Only the above package content, other products are not included. Note: Light shooting 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.