Size:approx 7.87"stretch x 4.72"height, fits for between 3 to 12 years old children
Breathe Cotton N95 material,5 layers of PM2.5 air mask ,the mask can be replaced by yourself.
Breathing valve: Exhale, automatically open the valve, gas masks discharged smoothly. Inhale, the valve automatically closes to the harmful gas into the mask.It helps to breathe smoothly, glasses do not fog up
You can replace every one week and cleaned the mask once a week,depending on the conditions of use.
Ideal for dust, smoke, pollution, gardening, travel.