The ornamental design for a facemask, as shown and described.
FIG. 1 is a front elevation view of my new design for a face mask.
FIG. 2 is back side elevation view of FIG. 1.
FIG. 3 is a right side elevation view of FIG. 1, the left side being a mirror image thereof.
FIG. 4 is top plan view of FIG. 1.
FIG. 5 is bottom plan view of FIG. 1.
FIG. 6 is a front isometric view of FIG. 1; and,
FIG. 7 is a front isometric view of the embodiment of FIG. 1 with the only difference being the jaw hinge being open, it being understood that all other surfaces are the same as the other views of this embodiment.
The features shown in broken lines in the drawing depict unclaimed subject matter and/or unclaimed borders only and form no part of the claimed design.