Yamada Medical Face Mask provides comfortable wear while effectively filtering bacteria and dust particles with good breathability. - Name: YAMADA Disposable Medical Mask 50 pcs - Brand: YAMADA - Unit Amount: 50 unit(s) Benefit: Meltblown filter layer filters dust and bacteria 99% Filters particles of 0.1 microns and 0.3 microns 99% Protects against secretions blood splashes and water droplets How to Preserve: Store in a cool, dry place.