The ornamental design for product packaging, as shown and described.
FIG. 1 is a top view of a product packaging showing our new design thereof;
FIG. 2 is a rear view of the product packaging shown in FIG. 1;
FIG. 3 is a first side view of the product packaging shown in FIG. 1;
FIG. 4 is a second side view of the product packaging shown in FIG. 1;
FIG. 5 is a front view of the product packaging shown in FIG. 1;
FIG. 6 is a back view of the product packaging shown in FIG. 1;
FIG. 7 is a perspective view of the product packaging shown in FIG. 1 in an assembled configuration for use; and,
FIG. 8 is a perspective view of the product packaging shown in FIG. 1 in a position of use with two containers drawn in broken line that depict environmental structure.
The environmental structure shown in broken lines in FIG. 8 forms no part of the claimed design.