What about children's outdoor activities in foggy and rainy days?

First of all, in foggy days, the elderly and children had better reduce outdoor activities. If they have to go out, they'd better wear protective masks. The choice of child protective masks is very important, mainly including the following points:

1 protective performance, ordinary medical masks and cotton masks can prevent germs, but don't mention smog. It is best to use a special anti-fog mask.

2 air permeability, which is a very important index. Masks protect our health and don't become killers of our families. At present, many masks on the market only pursue protection and ignore air permeability, because the national standard only stipulates protection and there is no air permeability. At present, the main protective masks on the market, such as 3M, Honeywell, etc., are all first-class industrial masks with protective performance, but I can only do with air permeability and comfort. Otherwise, European and American labor laws generally do not stipulate that this kind of mask should not be worn for more than 40 minutes, and it is clearly stated that it is not suitable for children, but there is no similar explanation on domestic packaging. I was worried for a long time before, and then I went to find a mask with perfect balance between protection and ventilation. Now my son is wearing this kind of micro-core. The American version of the mask called CROSSTEX I bought before is medical. The dust filtration rate of 0. 1 micron is 99.8%, and the air passing rate is 42Pa(3M9002 140Pa, which is generally 200 in China. And wear it for a long time to 80Pa), Puweixin is the China version of CROSSTEX. Although it is a China version and imported from the United States, the brand is different and the price is similar. However, CROSSTEX has no agent in China, so it is more reliable to choose Puweixin, because it adopts the safety fitting technology and is suitable for all face types, so children's faces can also be fitted. If it doesn't fit, no matter how good the protection is, Puwechat is only a little cheaper.