The ornamental design for heel for footwear, as shown and described.
The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front perspective view of a heel showing my heel design;
FIG. 2 is a rear perspective view of the heel shown in FIG. 1;
FIG. 3 is a side view of the heel shown in FIG. 1 (with the other side view being a mirror image thereof);
FIG. 4 is a front view of the heel shown in FIG. 1; and,
FIG. 5 is a bottom view of the heel shown in FIG. 1.
The background and surface on which the heel is displayed in the photographs and the shadows and reflections form no part of the claimed design.