Brightest reflective: 330+ cd/lx/m2 at 0.2/-4 degree angles. That meets the reflectivity brightness standards for highway brightness. 10 times brighter than colored reflective (like black or yellow) because it uses tiny mirrors. These retro-reflective strips increase the visibility of the wearer, especially in low light conditions where they enhance contrast. This will make you visible to drivers by reflecting the car’s light to the driver’s eye.