The ornamental design for a triangular double garmentclosure, as shown and described.
FIG. 1 is a front perspective view of a triangular double garment closure showing our new design;
FIG. 2 is a rear perspective view of the triangular double garment closure;
FIG. 3 is a front elevation view of the triangular double garment closure;
FIG. 4 is a left side elevation view of the triangular double garment closure;
FIG. 5 is a top plan view of the triangular double garment closure;
FIG. 6 is bottom plan view of the triangular double garment closure;
FIG. 7 is a right side elevation view of the triangular double garment closure; and,
FIG. 8 is a rear elevation view of the triangular double garment closure.
Our triangular double garment closure includes a central triangular design with two fasteners, and is intended for use with lingerie, brassieres, and the like.