The ornamental design for a mat with curvededge for stair step, as shown and described.
The following article relates to a small carpet runner adapted to be installed on stair steps, separately on each step, to prevent carpet wear on the stair.
FIG. 1 is a top front perspective view of a mat with curved edge for stair step showing my new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken lines disclose unclaimed environmental subject matter of the design in use.