I bought these to stop my cat from scratching the sofa, (esp the arms). They are only sold in the thin strips not wider strips, as I suppose it is more common for a cat to scratch the corners of the sofa? My cat has never scratched the corners, maybe she is different... Anyway I was rather "underwhelmed" when these arrived as they are a thin piece of plastic, with six holes punched in at the corners and edges and 6 little screw type fixings which were of quite poor quality. Essentially it is the screws that are what make this product great as the plastic cover is just a sheet of plastic and not worth £10.49! It is easy to install as you just screw in the spiral fixings. I haven't taken the covers off to see if they have left any damage but I assume it won't have damaged my (fabric) sofa. They do work which is really great, but they aren't thick enough for the arms of my sofa. Its just a shame these are the only solution (that I can find) to solve this issue, I just think £10.49 for a sheet of plastic is a bit of a rip off!