1. Filters almost 95% of air pollution,smoke,PM2.5,Dust,smog;
2. Special design easily breathing Respirator,can automatically open when you Exhale and close automatically when you Inhale to prevent dust or smoke come in;
3. Can also put some filter, and certain protective effect on the virus, preventing droplets and dust, protect your heath;
4. Colors: black, white, army green.