Cover plates for the inner sills of the vehicle. They perform both a protective and decorative function. Made of stainless steel, wear-resistant and quite durable. Activated when you open the door, you open the car door and see a lighted inscription on the sill. There are many variants of illumination, both in color and in the principle of operation. Just imagine, in the dark, you open the door, and there lights up the logo of your car, just like in premium cars.