The ornamental design for footwear, as shown and described.
FIG. 1 is a top plan view of footwear showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a left side plan view thereof showing the other shoe removed for clarity of disclosure;
FIG. 4 is a right side view thereof showing the other shoe removed for clarity of disclosure;
FIG. 5 is a rear view thereof;
FIG. 6 is a front view thereof; and,
FIG. 7 is a top perspective view thereof.
The broken lines in the figures show stitching that forms no part of the claimed design. Portions of the thread of the shoe shown in FIGS. 2, 5, 6, and 7 are shown as broken line concentric circles and form no part of the claimed design.