1. 100% Korean manufacturing and production mask. 2. Passed strict Korean Food and Drug Administration approval. 3. High filtration rate of over BEF 94%. 4. 2D Type of mask. 5. Fast delivery . 6. Same grade as FFP2 7. It is easy to wear and comfortable to wear because of the strap of the ear that uses a elastic fabric. 8. It is a mask that people with big faces can wear comfortably.