5.3 colors for your choose - Currently we have Black/Green/Purple/Mixed colors for you to choose. 4.Skin-friendly-3 non-woven fabric layers for the outer layers and one layer meltblown fabric inside. Adopting high quality material that is breathable and bring you a comfortable feeling. Skin friendly. 3.ASTM-Level 2 Grade Mask: These masks have been proved as the ASTM-Level 2 grade mask, and also passed the test of Nelson library. They’ll provide more protection than the usual disposable masks. 2.4-Ply: These disposable masks are 4 ply, one layer more than other usual 3 ply masks. That make these are more thick and more protection than the normal masks, but breathable meantime. 1.Individually Wrapped - The masks are individually sealed and they’re easily being put in the bag to share with your family & friend, more convenient and more safer. They’re available for indoor and outdoor activities.