I claim the ornamental design for footwear, as shown and described.
FIG. 1 is a front perspective view of footwear, showing my new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a back perspective view thereof;
FIG. 4 is an exploded front perspective view thereof;
FIG. 5 is an exploded left side view thereof; and,
FIG. 6 is an exploded back perspective view thereof.
The broken lines are included for illustrating environmental structure and form no part of the claimed design.
The broken lines immediately adjacent to the shaded areas represent the boundaries of the claimed design. None of the broken lines form part of the claimed design.