I claim the ornamental design for a headband, as shown and described.
FIG. 1 is a perspective view of a headband according to a second embodiment of the invention.
FIG. 2 is a perspective view of a headband according to an embodiment of the invention.
FIG. 3 is a top planform view of a headband according to an embodiment of the invention.
FIG. 4 is a bottom planform 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 of the headband and on the central rectangular shape are stitch lines and form a part of the claimed design. The broken lines showing a person's head and neck in FIG. 1 is to illustrate the claimed design as it appears when worn. These broken lines form no part of the claimed design.
The crosshatched pattern, although shown intermittently, is meant to represent fabric, and is understood to be distributed uniformly over the surfaces of the claimed design.