The ornamental design for a double flapfly with decorative buttons, as shown and described.
FIG. 1 is a front perspective view of the double flap fly with decorative buttons showing my new design and, specifically, showing a front view of the inside flap;
FIG. 2 is a front elevational view thereof with the double flap fly being partially open to show a back view of the inside flap and a zipper;
FIG. 3 is a front elevational view thereof with the double flap fly being in full-open position; and,
FIG. 4 is a front elevational view with the double flap fly in a closed position.
The three buttons in FIGS. 1-4 positioned on both sides of the inner flap of the double flap fly are for decorative purposes, and have no utility.
The broken lines representing the outermost left, bottom, and right borders of FIGS. 1-4 are for illustrative purposes only, and form no part of the claimed design. All other broken lines in FIGS. 1-4 represent stitching, which also forms no part of the claimed design.