Characterized by straps that are ties together at the top and bottom of the mask. Similar to procedural masks, and are a lightweight and comfortable type of mask that is meant to protect the user from large droplets and protect the environment and other nearby persons from the wearer’s contaminants. They are not designed to pass a fit test. It has gaps around the edges that allow many small particles to enter the respiratory system of the wearer. They are meant to help maintain a sterile environment necessary for surgery.