The ornamental design for a band for a hairpiece, as shown and described.
FIG. 1 is a side perspective view of the band for a hair piece comprising my new design;
FIG. 2 is a front perspective view of the design of FIG. 1;
FIG. 3 is a rear perspective view of the design of FIG. 1;
FIG. 4 is a side elevational view of the design of FIG. 1;
FIG. 5 is another side elevational view of the design of FIG. 1;
FIG. 6 is a top perspective view of the design of FIG. 1; and,
FIG. 7 is a schematic applied view of the band for a hair piece in use.
The broken lines shown in the drawings illustrate portions of the band for a hair piece that form no part of the claimed design. The broken lines in FIG. 7 illustrate environment in the form of a user of the band for a hair piece, with this environment forming no part of the claimed design. The surface contour lines in the drawings illustrates the contour of the claimed design and is not a claimed surface pattern.