The ornamental design for footwear, as shown and described.
FIG. 1 is a front perspective view of a shoe showing my footwear design;
FIG. 2 is a left side view of the footwear shown in FIG. 1;
FIG. 3 is a right side view of the footwear shown in FIG. 1;
FIG. 4 is a front view of the footwear shown in FIG. 1;
FIG. 5 is a rear view of the footwear shown in FIG. 1; and,
FIG. 6 is a top view of the footwear shown in FIG. 1.
The broken line showing of a sole, platform sole, heel, heel cap, sole, footbed, buckle, buckle holes, portions of the straps, and portion of the shoe upper is for illustrative purposes only and forms no part of the claimed design.