When the light bulb goes on in your brain, an idea comes to mind or the moment of awakening!
A micro switch inside the side hem switches on the blue/white light around the edge of the peak
powered by a watch battery.
See through the dark or be bright & be seen!
TFC shield off set on the front of a black cotton cap, comes with the standard twin layer EMF
blocking removable liner, a budget blocker with an extra function!