1. Package include:Only 20pcs mask filter,Replaceable Filters for face mask, PM2.5 standard with 5 layers,This product does not include masks,The picture just shows how to use it
2. Fliters Size:12 * 8 cm/4.72 * 3.15 in Suit for all mouth mask insided with fliter slot
3. Efficient active carbon filters isolate up to 99-percent of dust, ideal to protect your mouth and face from Dust, Haze, Allergies, Smoke, Pollution, Ash, Pollen, hazardous chemicals, heavy metal particles etc.
4. Filter Material: 2 * Anti-sticking cloth, 1 * Filter cloth, 1 * Activated Carbon and 1 * Efficient filter cloth as in picture
5. The face mask filters come as in 20Pcs, with quality 5 layers. For more Information about layers please refer to description area.