1. The first layer is waterproof non-woven can filter industrial pollutants, automobile exhaust, second-hand smoke and pollen allergies, etc.
2. The second and third layer is high quality thick melt-blown cloth, its filtration efficiency of microbial particulates can reach 95% under standard conditions.
3. The fourth layer is soft non-woven can absorb the water vapour exhaled by the human body to keep your face dry.
This KF94 Mask has total 4 layers in which 2 mid layers of melt-blown fabric, and it is thicker than others, meets protection standards, and can provide effective protection