FIG. 1 is a perspective view of a side element of a shoe midsole showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a perspective view of an alternative embodiment of a side element of a shoe midsole showing my new design;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken line showing of a shoe upper, shoe sole and the remaining portion of the shoe midsole shown in FIGS. 1-10 is for illustrative purposes only and forms no part of the claimed design.