KN95 Protective Face Masks White (20-pack) – Area Labs
2) Light test. I held 3 random masks at sunlight. They looked evenly made. No different spots (darker or lighter). It was even all the way. 3) Water test. I took all three mask and poured water into them.. moved it around and no water leaked. Good enough for me. Cons: The masks can be a bit loose for my taste . Are prob not authentic Kn95.