FIG. 1 is a perspective view of a footwear sole, seen from the bottom and right side of the sole, showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front end view thereof; and,

FIG. 6 is a rear end view thereof.

The unstippled and different densities of stippling shown in the figures are indicative of respective differences in contrast.

The broken line showing in the figures is for illustrative purposes only and forms no part of the claimed design.