Everything about MEO™ sets it apart from typical face masks. MEO mask gives you a choice of interchangeable outer covers, and is so comfortable and breathable you’ll forget you’re wearing it. It also protects you from dangerous particles that you cannot see but are present in the air you breathe. MEO™X is effective in filtering 99.97% of harmful airborne bacteria, removing most flu pathogens. This unique quality helps users reduce the risk of being infected by colds and flu.