Product review (5 stars): Very Pleased with Purchase
These really protect burners not in use, so they don't need to be cleaned as often.  I was concerned about how these would affect the look of the stovetop, but they actually have improved it.  It's very attractive now.  One burner is also a vent for oven heat, so I remove that one when using the oven.  Otherwise, it gets really hot, and it's probably not good to cover that vent while the oven is on, anyway.  I've decided to pick up another set for the holidays: the snowmen covers.  The quality is good.  These are not flimsy, and the enamel seems to be durable.