I claim an ornamental design for footwear, as shown and described.
FIG. 1 is a perspective view of footwear, showing my new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom thereof.
The large dashed lines are included for illustrating environmental structure and form no part of the claimed design. The small dashed lines represent stitching and form no part of the claimed design.