This is disposable protective mask,not medical mask
Three layers of protection:
1)non-woven fabric:isolate visible objects such as droplets
2)Middle meltonblown cloth:Fliter non-oily particles in the air
3)non-woven fabric:confortable and skin friendly
The shape of mask fits to the curve of face,effetively isolate,and it's comfortable and breathable.
The factory who produce this mask is established more than 10 years to produce medical products, has the emergency use authorization by America FDA and has passed all the test of China and allowed to export.