... normal citizen 1PLY 2PLY 3PLY Ear Loop Tie On 3 Ply Face Mask Tie On or Elastic Earloop ... ISO certificates2, Anti-Flu, with a filter encased in 3 layers of non-woven fabrics3, BFE95%, BFE99% filter paper ... NEW Surgical Face Mask, with a filter encased in 3 layers of non-woven fabrics. It has high filtration ... : 1, Anti-Flu, with a filter encased in 3 layers of non-woven fabrics2, With elastic ear loops ...