Window films

[Heronsin]

Has anyone used window films?

[Velldevit]

Hello. I also want to try to tint the window? I considered different options and read reviews. But I'm not sure, if I really can't see through it, what's behind the glass? And does it protect well enough from the sun? The information about Solaris 979 shop window film in the article is useful https://www.window-film-solaris.co.uk/, but I would like to hear the opinion of those who have already used such a film. What do you think about this?