High-visibility clothing, sometimes known as “hi-viz”, is any clothing worn that is highly luminescence in it’s natural matt property, or a colour that is easily discernible from any background. Most commonly worn on the torso and arm area of the body. Most industrial employers require it as a type of personal protective equipment (PPE). Traditionally yellow waistcoats worn by emergency services are a common example, but in more recent times any type of clothing in the “Hi Viz” colour spectrum is now deemed acceptable.