Features:-Adopting activated carbon and cotton, they can block more than 99% of organic gases such as benzene, toluene, aniline, carbonate, etc.-Made of silicone, it can better adapt to the contours of our face, will not press on the face, and is very comfortable to wear.-The main body is reusable, you can wash the mask with water regularly (do not wash it with detergent, do not wash it in a washing machine, and avoid exposing the mask to sunlight).-It can be used in various environments, such as painting, graffiti, factories, mines, research, etc. It is prohibited to use it for escape, fire fighting, underwater, oxygen-deficient, and low-oxygen environments (oxygen content is less than 19.5%).-Equipped with a breathing flap, it can effectively reduce breath.