Product review (1 stars): Wouldn't buy again. Easily caught on fire.
They looked nice when they first arrived, but immediately I found that they were hard to keep clean and scratched easily.  THEN, I accidentally turned on a burner (electric) with one of them on top. (New stove, turned the wrong burner knob...) I quickly realized the mistake, but not fast enough... the burner cover caught on fire!!!  OK, I'm not expecting these to be indestructible, and it was my mistake, but for a product that is intended to sit on stovetops, I was quite surprised by how flammable the painted surface is. It made a mess and a stink and now I don't want to use them at all.

My mom has the same covers and she also had one catch fire quickly after turning on the wrong burner.

If I could find some metal, non-painted stove covers, that would be ideal, but they don't seem to exist.  There seems to be only 2 companies making stove covers:  Reston Lloyd and Range Kleen.