Tie On Face Mask is an ASTM F2100-19 Level 3 Mask and hold a 510(k) Premarket Notification clearance (K211984). Robust commitment to safety and quality standards. Protection & Breathability – Multi-layer filtration technology provides maximum protection, comfort, and breathability. The active filter layer of our Products is composed of ultra-high grade electrostatically charged Meltb... https://berlinglobalpartnersgmbh.de/product/3-ply-surgical-face-mask-anti-fog-medical-face-shield-mask-with-earloop-tie-on/