Dr. Natura disposable face mask are eco friendly, maximum filtration, 4 Layer Defense, comfortable wear, FDA compliant, and fully tested. Our face mask are made of 4 unique layers of protection with high B.F.E. and P.F.E. filteration and high elastcity ear hook. Each box comes with (50) mask! They are also latex free, Cadmium free,and fiberglass free. Some practical uses include beauty salons, pet shop and groomers. They are worn in the food industry, construction workers , and various olther situations where you can help protect yourself and avoid heavy croweded areas.