Footwear sole

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;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The broken lines depicting an article of footwear in FIGS. 1-6 are shown for environmental purposes and form no part of the claimed design. Further, the broken lines immediately adjacent to the solid-line portions depict a boundary of the design, with the broken lines forming no part of the claimed design.