We claim the ornamental design for footwear, as shown and described.
FIG. 1 is a perspective view of footwear, showing our new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view thereof, with the strap shown partially detached from the sole of the footwear; and,
FIG. 9 is a bottom perspective view thereof, with the strap shown detached from the sole of the footwear.
The dashed line patterning on the top and bottom of the sole are included for illustrating environmental structure and form no part of the claimed design.