SHIELDOFGLORY's World First Transparent Sanitary Masks, MASCARE M5 & SG4, boast 99.9% Antibacterial Rate. Passed by SGS Test for FDA. SHIELDOFGLORY Hygienic Mask’s transparent shield allows users to have transparent interaction with their customers and show their friendly smiles. The anti-fog coating is added so you can continue to have clear interaction with customers all day long. Provide best customer service while protecting yourself and your customers from viruses. With SHIELDOFGLORY Hygienic Mask, you don’t have to give up your smile for protection from sicknesses. read full review »