US D604030 S1
An ornamental design for a footwear sole, as shown and described
FIG. 1 is a perspective view of the footwear sole embodying the new design;
FIG. 2 is a bottom view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof; and,
FIG. 5 is a rear view thereof.
FIGS. 1–5 show features of an article of footwear in phantom lines. These features are shown for environmental purposes and do not form any part of the claimed design.