The Vivera 4-ply disposable mask creates a physical barrier between the wearer’s mouth and nose and potential contaminants in the immediate environment. These coverings will reduce exposure of your saliva and respiratory secretions to others. Not only will the mask provide the wearer with protection against large fluid droplets, but it will also help prevent the spread of such droplets to vulnerable patients. These masks are 4-ply-compressed for maximum lightweight filtration, and their layered technology allows for a 99% bacterial filtration efficiency. They are also made in the USA.