Philadelphia 76ers symbols cloth face mask. Ordinary masks work to prevent dust, chemicals, car exhaust, and microorganisms. However, how much dust, chemicals or microorganisms are prevented depends on the type of mask. At the same time, with the current epidemic situation, masks such as: 3-layer medical masks, 3M masks, N95 masks, cloth masks ... are also used to prevent droplets from other people coughing. , sneezing, mucus nose, spit sticking to nose, mouth.
