Material: Non-woven fabric
Size: 2 x 8 cm / 4.72 x3.15 in
Quantity: 30 pieces in one package
-Filter masks help protect you from larger particulates, which are inhalable particles of toxic materials like sand, dust, ash, construction site materials, airborne toxins and more.
-They work surprisingly well at filtering 0.1 micron, virus-sized particles.
-As the mask filter gets clogged, it becomes more difficult to breathe. When this occurs, throw it out and use a new one.