Product review (5 stars): Functional gap covers.
Really a 4.5.  These are easy to clean and they lie flat.  Since they are soft rather than rigid, it is possible to catch them on a spatula and flip them up, but it doesn't happen often.  I don't worry about them getting singed if that happens because they're silicone.  And they definitely do keep crumbs from falling down between the stove and counter, even though the gap is over 1/4".  Some people have noted that they are too short and, yes, they could be maybe 1/2" longer.  But they really do cover almost all the gap.