This is an good product, it's a thick scratch resistant film that greatly reduces the glare the Edge 800 is afflicted with. However, the readability gets somewhat reduced, and it fits a little to perfectly; no normal person will be able to put it in place with the minimal tolerances it is fabricated with, after about 10 attempts I gave up, still having a small air bubble in one of the corners. If it was a tenth of a millimeter smaller on all sides it would make life a lot easier.
It also says in the instructions on the packaging "locate a dust free area (e.g. bathroom)". All I can say is I would like to find the home that is completely dust free, including bathrooms, and settle there for the rest of my life. I have never heard of or seen any such place. There is a big likelihood that you will end up with at least one dust particle behind the film, and when it's there, you won't be able to remove it, as it sticks to the film (and any touching of the film will make it worse).
Conclusion: It is definitely a product I would recommend, however do understand that the installation most likely wont become as perfect as you might wish. It is a mystery to me why a product such as this isn't included with the Edge from the factory.