"Hob savers"
These do what they say, they are protecting the hob from scratches which might happen if you move a pan, I cut some myself before but these look smarter, they are easy to wipe or rinse, may need some more as I have 5 rings. I still have these and I feel they work well to help cushion the surface from heavy pans/potential scratches. I did have to throw one away after it split, due to my husband putting the steamer on without water in the bottom pan, by the time I realised the pan was extremely hot and the silicone overheated and cracked. I wonder if the hob would have suffered without it!