
I have two for two cars. Jeep Cherokee and Rav4. Sometimes I can't stick them no matter what I do, sometimes they stick to the window for months until one of the suction cups comes off. It's definitely harder to see through a window than if there were nothing there, but I think it depends on the size of the window. The more they are stretched, the better they are seen. The Jeep has a relatively small and angled rear passenger window, making it more difficult to extend fully and therefore harder to see. Even if you get used to it a little. Make sure you measure your window to get a feel for how much it will stretch and be aware that decals or safety glass stickers on the window will make it difficult to apply. I like that it adapts to pretty much any window shape as all 4 corners stretch.

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