Reusable Protective Face Masks 5-Layer Activated Carbon Filter PM2.5 Mouth Mask -5pack

Description

Material: filter cotton Scope of application: mask Uses: dust removal, dust prevention Specifications: 5-layer filter for adults Working principle: the first layer: spunbond non-woven fabric, preliminary filtering of 0.5 micron dust; the second layer: high-efficiency filter fabric, filtering automobile exhaust and second-hand smoke, etc. The third layer: activated carbon fabric, filter benzene, bacteria, germs, and smaller 0.3 micron harmful substances; the fourth layer: high-efficiency filter fabric, filter smaller harmful substances; the fifth layer: spunbond non-woven fabric, filter the remaining harmful substances. what's in the box 5x mask PM2.5