FIG. 1 is a top, front and left side perspective view of a elastic insert for a sports shoe sole, showing my new design;

FIG. 2 is a bottom plan view thereof, the top plan view being a mirror image of the view shown;

FIG. 3 is a front elevational view thereof, the rear elevational view being a mirror image of the view shown; and,

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image of the view shown.