This Mask has been treated with Swiss engineered HeiQ V-Block technology proven to provide effective protection for fabrics against contamination from microbes. This fabric contains an antimicrobial agent to prevent microorganisms from spoiling and degrading the product. HeiQ V-Block treatment provides long lasting protection to the Mask, effectively resisting spoilage and deterioration by microorganisms. This fabric treatment is designed to protect only from spoilage and degradation by microorganisms, it does not protect users or others against human pathogens including disease causing bacteria, viruses or germs