The ornamental design for a towelring, as shown and described.
FIG. 1 is a front perspective view of a towel ring in accordance with the invention with decorative indicia shown in broken lines;
FIG. 2 is a left view of FIG. 1 with decorative indicia shown in broken lines;
FIG. 3 is a right view of FIG. 1 with decorative indicia shown in broken lines;
FIG. 4 is a bottom view of FIG. 1 with decorative indicia shown in broken lines;
FIG. 5 is a top view of FIG. 1 with decorative indicia shown in broken lines;
FIG. 6 is a front view of FIG. 1 with decorative indicia shown in broken lines; and,
FIG. 7 is a back view of FIG. 1 with a receiving bore shown in broken lines.
The dashed lines immediately adjacent to the shaded areas in the figures represent the boundaries of the claimed design. The dashed lines in the figures illustrate the portions of the design that form no part of the claimed design. None of the broken lines form any part of the claimed design.