What is simplemask?

As an AI language model, I don't have any specific information about a product called "simplemask." However, typically, a simple mask refers to a basic face mask that covers the nose and mouth to help protect against respiratory droplets. Simple masks are typically made of cloth, non-woven materials, or surgical materials and are often reusable. They are an essential piece of personal protective equipment (PPE) during an infectious disease outbreak or pandemic. A simple mask can help reduce the spread of respiratory infections by blocking the transmission of droplets from an infected person.