5-Layer Face Mask : WWDOLL 5-ply KN95 face mask is protective and high filter efficiency. The outermost 1 layer non-woven fabric can filter large particles, middle 2-layer melt-blown fabric can block more than 95% particles, 1 layer hot air cotton can filter pm2.5 and the innermost 1 layer non-woven fabric is skin-friendly and softer that give you the comfortable usage experience at the same time it protects your breath with high filter efficiency. | 3D Design : The 3D shape of KN95 mask is designed according to the human face shape to ensure the tightness, to fit the human face, to increase the breathing volume when use the face mask. Our WWDOLL breathable face mask KN95 can greatly improve the permeability, and to make wearing and exhaling more comfortable. | Powerful Protective Barrier : Not easy to drop, no need to adjust it when you work. Softer elastic ear loop design of the KN95 face mask helps eliminate pressure on the ears for comfortable experience. Adjustable nose clip design can help the mask perfectly attach onto your face. The four sides join tightly to the face; Hence, the protective mask KN95 avoids unfiltered air directly entering into. | Qualified Manufacture : Chengde Technology Co. KN95 face mask made in China(not is USA) | Disclaimer : This KN95 mask is NOT an N95 mask. For more information about KN95 masks please see the following before you purchase: amazon.com/AboutKN95s