The ornamental design for a wristband with horseshoe-shaped ornament, as shown and described.
FIG. 1 is a perspective view of a wristband with horseshoe-shaped ornament;
FIG. 2 is a front view thereof;
FIG. 3 is a back side view thereof;
FIG. 4 is a top side view thereof;
FIG. 5 is a bottom side view thereof;
FIG. 6 is a right side view of thereof; and,
FIG. 7 is a left side view thereof.
The broken line showing of a debossed logo in FIGS. 3, 6, and 7 is included for the purpose of showing environmental structure and form no part of the claimed design.