| 摘要 |
Embodiments of a face mask with a port configured to allow flow through the face mask at least in a direction towards a user, generally defined as an adhesive side or user side of the mask are provided, along with methods for using the same. In one embodiment, a face mask includes a breathable, flexible sheet having a first side and a second side, an adhesive disposed on a perimeter of the second side, the adhesive circumscribing a center region of the sheet and a port comprising a center region of the sheet. The port is configured to allow flow through the face mask at least in a direction towards a user without removal from the user.
|
