FIG. 1 is a top plan view of a cushioning piece for a shoe mid-sole showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a side elevational view;

FIG. 4 is a sectional view taken on line IV--IV of FIG. 1; and

FIG. 5 is a perspective view of the piece in use.

The broken line showing of a shoe sole in FIG. 5 is for illustrative purposes only and forms no part of the claimed design.