Product Description Best proven Government certified protection to combat against SARs and Avian Flu. Recommended also for additional swine flu protection and prevention. Disposable Viramask has an advanced certified N99 filter, which means that it has 100 times the protection of standard N95 masks. Strap free, adhesive disposable mask. Exceeds the latest CDC/NIOSH fit testing Total Inward Leakage (TIL) with a 100% success rate. One size fits all- great for kids or adults. Molds to all facial contours providing a universal custom fit. Built in evaporative cooling design. Hypoallergenic medical grade adhesive. Comfortable to wear, easy to talk. Instant fit with no fit testing required. Disposable-each mask can be used up to 8 hours each, allowing time to reach safer ground. Particle Penetration less than 0.05% at 85 L/min. Viral/Bacterial Filtration Efficiency (VFE/BFE) greater than 99.95%. Certified by US Government CDC/NIOSH for filtration efficiency and breathing resistance.