Not the most pleasant thing to put up, look at or explain BUT it does what it is intended to do and if you take your time when you install them to get wrinkles out, it is basically invisible from outside. I mostly covered them with shades and while you can see them, they don't restrict your view outside (100% see-thru.)Definitely worth the money if you can feel cold air around your window frame/where the sections of your window meet or if you have a big window ac unit that is too impractical to remove and a normal ac cover doesn't cut it (my case.)