I claim the ornamental design for a pull tab for zipper, as shown and described.
FIG. 1 is a front elevational view of a pull tab for zipper of the claimed design;
FIG. 2 is a rear elevational view of the pull tab for zipper shown in FIG. 1;
FIG. 3 is a right side elevational view of the pull tab for zipper shown in FIG. 1;
FIG. 4 is a left side elevational view of the pull tab for zipper shown in FIG. 1;
FIG. 5 is a top plan view of the pull tab for zipper shown in FIG. 1;
FIG. 6 is a bottom plan view of the pull tab for zipper shown in FIG. 1; and,
FIG. 7 is a rear perspective view of the pull tab for zipper shown in FIG. 1.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.