The Safety Zone RS-700-BFE Surgical Procedural Disposable Mask with Ear Loops, BFE and PFE Rated, FDA, CE, ASTM Level 1 and EN14623 Type 1, 3-Ply Pleated,One size fits all, Blue (Pack of 50) Latex Free and Fiberglass Free Superior Comfort and Breathability 99% BFE (Bacterial Filtration Efficiency), 99% PFE (Particle Filtration Efficiency) Triple Layered and Fluid Resistant for Greater Protection Pliable Metal Nose Piece for Better Fit Latex Free and Fiberglass Free 99% BFE (Bacterial Filtration Efficiency), 99% PFE (Particle Filtration Efficiency) Triple Layered and Fluid Resistant for Greater Protection Pliable Metal Nose Piece for Better Fit