Description: Material: Non-woven Fabric Item Size: 17 * 10cm / 6.69 * 3.93in Color: White Quantity: 30PCS Features: Can filter out 94% of particulate matter, 3-layer designed. With elastic ear-loop and adaptable nose bar, soft and comfortable to wear. Effectively blocks dust, air pollutant and droplet. Package includes: 30PCS * KF94 mask What is a KF94 mask? KF94 is the abbreviation of KOEARN FIL TERde, and it is the mainstream mask standard in Korea issued by Korea Food and Drug Administration (MFDS). The mask of this standard has a filtration rate of greater than 94% for particles with a diameter of 0.4MM KN95 is China's mask protection standard, which refers to the filtration of non-oil particles with a diameter of 0.3MM greater than 95% Therefore, KF94 and KN95 are similar to N95 in that they are all masks under a protection level, but the protection capabilities are different.