I claim an ornamental design for footwear, as shown and described.
FIG. 1 is a perspective view of footwear shown in solid lines, wherein the large dashed lines represent stitching and the small dashed lines denote unclaimed environment;
FIG. 2 is a right side view of the footwear illustrated in FIG. 1;
FIG. 3 is a left side view of the footwear illustrated in FIG. 1;
FIG. 4 is a front view of the footwear illustrated in FIG. 1;
FIG. 5 is a back view of the footwear illustrated in FIG. 1;
FIG. 6 is a top view of the footwear illustrated in FIG. 1; and,
FIG. 7 is a bottom view of the footwear illustrated in FIG. 1.