The ornamental design for a footwear, as shown and described.
FIG. 1 is a front perspective view of footwear showing my new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a back elevation view thereof; and,
FIG. 6 is a top plan view thereof.
The stippling shown in FIGS. 1-6 indicates fabric contrast.
The broken line showing of the heel, sole, platform, heel cap, portions of the footbed, buckle, buckle holes, portions of the straps, and portions of the upper in the drawings shows unclaimed subject matter.