The Parrotias KN-95 face masks follow the GB2626-2019 respiratory protection standards. These standards require all masks to have a filtration efficiency of at least 95%, which means the material can filter out harmful molecules such as fine particles and dust.
Size: Increasing the width of the ear loop to 5.5 mm reduces pain in the ear and makes it more comfortable. 
5-Ply Layers: Our KN-95 mask is truly made of 5 layers with 2 non-woven outer layers as well as 2 melt-blown inner layers and a non-woven middle layer to absorb small moisture particles.