Wearing a disposable mask is generally quite uncomfortable, as the mask itself digs into parts of your face and the straps can be too tight or too loose and slip around making to useless. With a mask adapter, you can adjust the straps just one time, then attach the disposable mask and not worry about the manufacturing variation on the disposable piece. 3D printed to fit your actual face shape, the mask adapter provides a level of comfort that is significantly superior to a disposable face mask. This product help the world better fit their disposable facemasks and reduce human exposure to particulate matter. This Product is delivered as a set of 2 (tw0) pieces.