A motor vehicle turn signal cancelling device operated by a turn signal cancelling member projecting from the steering wheel includes a frame structure and a mounting member attached thereto. The garment stiffener assembly central to the invention comprises a garment stiffener structure, adhesive material permanently applied thereto, and a backing material. Gussets improve the strength of the cleat assembly. During usage of the present invention, the distal end of the shield also serves as a guide over the neck of a vial.