Surgical pleated mask (4-ply structure) Regular size Blue 50 pieces 54220 1 box (50 pieces)

This is a 4-ply medical mask that complies with US standard ASTM-F2100-19 Level 2. The 6mm rubber used makes it difficult for the rubber to dig into the ears, so it is less likely to cause pain even when used for long periods of time. Color: Blue Quantity: 1 box (50 sheets) Material: Body and filter: Polyolefin, polyester, ear hook: Polyester, polyurethane, nose fit: Polyolefin Size: 175×90mm Bacterial Filtration Rate (BFE): 99% Particulate filtration efficiency (PFE): 99% Exhalation resistance: 1.8mmH2O/cm2 Blood impermeability: 120mmHG Flame spread: class 1