After buying the film I was initially a bit skeptical about whether the attachment is also easy. Thanks to the included squeegee and the sharp knife of the cut was not a problem. After a thorough pre-cleaning, small air pockets could emphasize simple and it looks great! The attachment of the film is really very simple and I consider it a relief that I will no longer blinded by the rear window of the following vehicles. One can very well see from the inside out, it just bad from the outside in. Whether it will also help to heat, I can not say, because it is rather cool at the time, it could, however, imagine. A truly great film that you simply also can remove when one should not like - but who does ?!