Kinds of Facemasks. Fold N95 foldbale respirator it can create major complications if left unattended. Blue N95 blue strap don't wear anything that's rough or stiff. If you plan to use it for more than six hours per day or in a high-particle environment, a full-face respirator mask may be appropriate. They come in handy if you live in an area where there are frequent wildfires or hurricanes. On 8/9/2022, CDC NIOSH approved it as a P95 grade mask.