3M MMM2643A All-Purpose Mask Filters 99 Percent Bacteria 5-BX Blue

All-purpose mask helps provide relief from irritating effects of common household and yard dust. Design offers a 99 percent filter efficiency against ragweed pollen. Mask helps reduce spread of germs by filtering out 99 percent of wearers exhaled airborne bacteria. Mask effectively warms and moistens inhaled air to make breathing easier.