It stops sticking to window

I bought it so that I could put one in the window on sunny days while I was driving. If there was no sun, I simply took it off of the window and stored it. It worked for almost four months and then started to not stay on the glass. If you plan to just stick it on the window and never remove it, this would be a good purchase for you. If not, I suggest looking for one that’s sticks longer

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