The ornamental design for a headband, as shown and described.
FIG. 1 is a perspective view of a headband according to an embodiment of the invention;
FIG. 2 is a second perspective view of a headband according to an embodiment of the invention;
FIG. 3 is a top plan view of a headband according to an embodiment of the invention;
FIG. 4 is a bottom plan view of a headband according to an embodiment of the invention;
FIG. 5 is a first side elevational view of a headband according to an embodiment of the invention;
FIG. 6 is a second side elevational view of a headband according to an embodiment of the invention; and,
FIG. 7 is an end elevational view of a headband according to an embodiment of the invention.
The broken lines shown on the edges and on the central portion of the headband are stitch lines and form a part of the claimed design. The broken lines showing an individual's head, neck and facial features in FIG. 2 are present to illustrate the claimed design as it appears when worn and form no part of the claimed design.
The crosshatch pattern, when shown, is meant to represent a fabric different from the horizontal shaded fabric shown uniformly over the majority of surfaces of the claimed design.
The even-spaced horizontal lines (e.g., lines on headband behind individual's ear in FIG. 2) represent a third fabric that is different from that of the two fabrics represented by the horizontal shading and crosshatch pattern.