Sole

FIG. 1 is a top, back, right-side perspective view of a sole;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dot-dashed broken lines illustrate the boundaries of the claimed sole and form no part of the claimed design. The portions of the figures shown in lighter contrast on a top surface and a bottom surface of the sole illustrate environment and form no part of the claimed design.