US D528723 S1
FIG. 1 is a perspective view of a sponge mop refill showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a left side view thereof, the right side being a mirror image thereof; and,
FIG. 4 is a front view thereof, the rear view being a mirror image thereof.
The broken lines of the sponge, hole and fasteners are for illustrative purposes only and form no part of the claimed design.