The Virogard Re-Usable Protective Mask is lightweight and contoured for an ergonomic fit to the face such that it can be worn without discomfort for long periods. Apart from the high quality materials and workmanship incorporated in their manufacture, the key difference with Virogard masks lies in their antimicrobial action. Virogard Masks will kill Influenza Type A virus, Ecoli and Tuberculosis on contact – not simply trap viable virus on the mask surface or within its fibers.