“KF94” means that this mask made of Melt Blown filter which can block more than 94% of fine dust and viruses over 0.4㎛ in size.
KF94 is similar to FFP2 in Europe, N95 in the US, and KN95 in China.
KF94 mask generally has 4 layers structure of three non-woven fabric and MB filter.
BYE CO MASK (KF94)
$0.52~
