The ornamental design for pair of footwear, as shown and described.
FIG. 1 is a top plan view of the left foot of a pair of footwear, the right-foot version being a mirror image thereof and removed from the pair for clarity of disclosure;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a left, top, front perspective view thereof
FIG. 4 is a bottom, rear perspective view thereof; and,
FIG. 5 is a perspective view of a pair of footwear.
The broken lines showing portions of the design in all figures are included for the purpose of illustrating unclaimed features and are not part of the claimed design.