The Centers for Disease Control and Prevention on Tuesday issued a new scientific brief extolling the benefits of masks. Previously, most guidance has encouraged mask use among the general public as a means of protecting those around the wearer from the spread of SARS CoV-2. However, in the new brief, the CDC cited growing evidence that wearing a mask not only protects others, but also can protect the wearer. Also cited in the new recommendation was a recent study from economists at Goldman Sachs which stated that increasing universal masking by just 15% could prevent a future lockdown and reduce associated losses by $1 trillion. Further, it has been proposed that the benefits of masking may be synergistic when worn both for source control and personal protection, although definitive evidence is lacking. When choosing a mask, CDC recommends multi-layered cloth masks with a high thread count for those outside of healthcare settings. They also continue to recommend social distancing, hand hygiene, and adequate ventilation as important to preventing transmission.