Cortina 2191 3 Triangle Warning Flares in Plastic Box Interior strips of molded florescent plastic provide effective warning for daytime use Exclusive wire bracing controls degree of tilt, even in extreme wind conditions Meets or exceeds all DOT standards and requirements of FMVSS125 Acrylic plastic strip reflectors, hermetically sealed and impervious to dust and moisture, unfolds to a triangular shape and are held firmly into place with a sturdy-locking device Permanently printed placement instructions on case and triangle