The ornamental design for a handbag with flexibledisplay, as shown and described.
FIG. 1 is a front view of the handbag with flexible display showing the new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top side view thereof;
FIG. 6 is a bottom side view thereof; and,
FIG. 7 is a perspective view thereof.
The shade lines shown in the drawings depict contour of handbag with flexible display and not for surface ornamentation, which form no part of the claimed design.