It is made of 100% korean made of 4-layer filter (MB filter), and it has excellent premium lining and absorption power. It is a material for mask filter that effectively absorbs secretions, and is a comfortable mask for an extended use.
BNK produces its own Melt Blown fabric, and non-woven fabric for mask linings using fiber for sanitary pads and diapers.
It is designed for easy breathing and less pain on ears.