They are made from white reflector material. They provide a reflex reflector on the front of the car, and make the car "look" like it has fog lamps.
They are functional at night because they reflect light from oncoming cars.
During the day they have "depth" to the reflection, really do look like a lens over a fog lamp.
[quote:3552542b53="eMass"]Very nice! 8)
On another note, what do those white things in your foglight holes do?[/quote:3552542b53]