ASTM Level 1 Earloop Face Mask, new, 50 in box

Fluid resistant outer layer Hydrophobic middle layer Super smooth ES inner layer for prolonged use without irritation Extra-long aluminum nose piece 100% Latex-free and fiberglass free ASTM Level 1 Bacterial Filtration Efficiency (BFE): >95% Differential Pressure: <4.0 mm H2O/cm2 Submicron Particulate Filtration (PFE): >= 95% Fluid Resistance to Synthetic Blood: 90 mmHg