Among the negative ratings for product I can think of nothing. It is here to film for 12 euros. So we could move 4 large and 2 small windows. Who has the expectation that the price which must be found for the ages, the need to consider at what cost compared new window! And a beauty contest must win nor the whole. It must fulfill its purpose! And it does at unbeatable Art & Weise at the price! If the whole thing just keeps the winter months, then we have enough that completely. We will save a lot more than these 12 euros in heating costs. In addition, the window frames no longer go moldy, we do not have every morning pull the window, as they have been previously soaked and ice crystals no longer form on the windows also. If the investment was not worth it !! Visually, the film falls not on, only at the edges you can see the sides trimmed, but only if it respects and white mans. In comparison to the previously constantly wet or frozen windows in any case also an optical improvement! To use: Have been 3 window pasted easily alone, even the previous snub is not a problem if you are technically adept, after all, a little. If you föhnt long enough, one also sees no strip or creases as described here by some more. Important is the approximately 10-minute airing before mounting - best not even in the rain and that the film is not appropriate as possible in warm temperatures. All this promotes the humidity, which can then include with the foil, which can then lead to the formation of condensation between the film and window. Would the film to anyone and buy again at any time!