Cheap and effective. As always with this type of product, it is difficult to do something without any bubble net. but the only downside that I find in a pinch, it is the thickness of plastic, very dificult to cut with cutter. True, he is advisor to the scissors after cutting measure, but it is difficult not to leave then update the sides even before having cut once cut if one misses there's more that to recommend another. So mistrust on the cutting ^^ Me I cut through the cutter on the window seal .. attention to not cut the seal.