The film is as described. But I found nowhere a reference to the thickness of the film. Only when the delivery arrived, I noticed that the package was very easy. The package also sobering description 120 .mu.m it is thick. According expensive films are at least 400 .mu.m thick. So about 3 times as strong as this one. So I am pleased if it considers at least 2 summers. Longer shelf life I trust this film not to. But I enjoy being disabuse :-). Also, most are nubs (corresponding to the dimples of a packaging film) not filled with air. Perhaps the crushed when packing in the package? I dont know. Knobs of high-quality solar films are also specially shaped. Also this product is thus not only cheaper but also generates cheap.