Disposable Protective 3-ply Mask Pkg/50

50 masks per box Disposable, protective 3-ply mask Provides incremental protection against bacteria and large particles shed in liquid droplets Our masks feature ultra-fine, polypropylene filter layers, nose clip and elastic ear loops Store in a room with relative humidity, no more than 80%, and good ventilation to avoid high temperature. Use with caution if you are allergic to polypropylene materials Do not use if package is damaged Storage period of 2 years Single use only FDA Certified