Footwear midsole

[0001]FIG. 1 is a front perspective view of a footwear midsole showing my new design;

[0002]FIG. 2 is a front elevational view thereof;

[0003]FIG. 3 is a rear elevational view thereof;

[0004]FIG. 4 is side elevational view thereof;

[0005]FIG. 5 is an opposite side elevational view thereof;

[0006]FIG. 6 is a top plan view thereof; and,

[0007]FIG. 7 is a bottom plan view thereof.

[0008]The dash-dash broken lines in FIGS. 1-7 represent portions of the footwear midsole and environmental structure that form no part of the claimed design. The dot-dash broken lines in FIGS. 3, 6, and 7 define the bounds of the claimed design and form no part thereof.