FIG. 1 shows a perspective view of the bag; FIG. 2 shows a front view of the bag; FIG. 3 shows a rear view of the bag; FIG. 4 shows a right side view of the bag; FIG. 5 shows a left side view of the bag; FIG. 6 shows a top view of the bag; and, FIG. 7 shows a bottom view of the bag. The broken lines representing stitching are part of the claimed design.