It gives Protection against gases, smells, all PM.PM2.5, PM3.0, pollen, smoke and pathogens such as viruses and bacteria.
It has Built-in exhalation valve lets air in and keeps moisture out. This mask will let you breathe easier while keeping dust and other pollutants out.
Its Comfy elastic loop lets you wear these masks for long periods of time without irritation.
The perfect combination of ergonomics, size can adjust to meet the most head type.This mask keeps out the bridge of the nose the following part, have aluminum sheet fixed, to prevent the slide.
This is a value for money mask!