Care and Use: Keep the face mask clean before use. Do not touch the rear side of the face mask. Do not wash the face mask with water. Water will destroy the filtering ability and protective nature of the mask. Do not steam the face mask or put it in the microwave. Make sure to discard the face mask when it becomes visibily ditry or breathing resistance increases remarkably..Well Wrapped: This productcan avoid the pollution caused by touch when taking the mask. Can be perfectly placed in your backpack, purse and pocket..5-Ply Protection: This KN95 mask is made of 2 non-woven outer layers, 2 melt-blown inner filter, 1 non-woven cotton middle layer, offers more protection than a standard disposable 3-Ply mask. The filter efficiency is 95% which is tested by NPPTL, greatly keeping you from dust, PM 2.5, haze, smoke, automobile exhaust, etc..Comfortable & Breathable: This Large KN95 face mask use skin-friendly non-woven fabric, no irritation to your skin, High-elastic ear loops and adjustable nose clip to ensure a comfortable fit and no strain of ears. It's lightweight and foldable, can cover mouth, nose and chin easily. Creates a tight seal & stops glasses from fogging..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.