If you want to protect yourself from the flu this season, you'll want to consider picking up an N95 mask. N95 filter does N95 mask filter exhaled air the N95 respirators are the best at keeping particles out and protecting the wearer. Face Mask hsn N95 face mask most N95 and KN95 masks fit a little tighter than a surgical mask. No matter how you wear it, remember to make sure it covers both of your nostrils and fits securely around your chin and cheeks. A N95 mask, which is sometimes also called a respirator, can be purchased at any hardware store or online. A cotton mask is superior to no mask, but inferior to medical three-layer masks, KN95 respirators, and N95 respirators.