FIG. 1 is a top, front and right side perspective view of a leg support cushion showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the undisclosed left side being a mirror image of that shown;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines showing a person's legs and an associated planar surface are for illustrative purposes only and form no part of the claimed design.