1. Regular reflective sticker that can be applied to almost anything. Reflectivity is shown in bottom picture with the camera’s flash on.
2. Super reflective yellow (a rigid material best for flatter surfaces but will work on slightly rounded cylindrical objects like flasks...) with black overlay.
*these are the highest quality permanent stickers that can last anywhere from 6-15 years depending on the weathering it receives (uv rays from sun, rain, etc.). We recommend not applying to the painted area of your vehicle unless you want it there forever. Windows are better.