Best reflective device / light: GoMotion Sport Runner Litebelt ($ 79.95) You can widen and direct the beam from the embedded front light, plus it has a flashing rear taillight, reflective trim, and two small zip - up pockets. (health.com)
Beginning in 1965, Kusama began introducing mirrors as reflective devices in her work with the Infinity Mirror Rooms. (artsy.net)
Thus, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, «Lamps, reflective devices, and associated equipment.» (cars.com)