The ornamental design for a productlabel, as shown and described.
FIG. 1 is a top plan view of a portion of a product label with my design, the broken line drawing of the portion of the product label being for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is a side elevational view of the product label of FIG. 1; shown broken away to indicate no specific thickness; and,
FIG. 3 is a bottom plan view of the portion of the label of FIG. 1, the broken line drawing of the portion of the product label being for illustrative purposes only and forming no part of the claimed design.