Wearing a mask that fits well, is most protective, and that you will wear consistently is a critical public health tool for preventing spread of COVID-19.  Some masks and respirators offer higher levels of protection than others, and some may be harder to tolerate or wear consistently than others. It is most important to wear a well-fitting mask or respirator correctly that is comfortable for you and that provides good protection.  Properly fitted respirators provide the highest level of protection and may be most important for certain higher risk situations, or by some people at increased risk for severe disease.  CDC’s mask recommendations provide information that people can use to improve how well their masks protect them.