Medinc 25Pcs 4L KF94 face protection 4-Layer KF94 Face Masks 3D Comfortable 100PCS Filter Mouth Face Mask Cover Filtration Rate ≥95% protective Half AUEach mask consists of 4 layers: The first layer is 50gsm non woven fabric; the second layer is 50gsm hot air cotton; the third layer is 50gsm melt blown cloth; the fourth layer is 30g melt non woven fabric. Details TGA Listed 4 Layers Individually Packed Light weight and easy to carry Filtration Rate (BFE) 95% White colour Soft and wide Ear Loops Provide comfort fit How to use Step 1: Open the mask with the end of the nose strip facing up. Step 2: