*NEW DROP* /// REFLECTIVE HOODIE ///
Retro-Reflectivity has also always been present in nature. A cats eye is an example of this phenomenon. So retro reflectivity was discovered, not invented. What was invented was an artificial way to reproduce these characteristics in a usable form.
Reflective materials work at night by bouncing back the light from a source. To work properly it needs to be dark and there must be a light source.
They are called 'retro-reflective' because they are designed to bounce most of the light back to its source instead of scattering it.