basically a big magnetically held in place screen material that you
have stored in a roll in your car. When you can't find a place to stay
in terms of a motel you whip the screen out and throw it over your car
and then you can unroll your windows without bothering about flies and
mosquitoes. You also font have a disgustingly foggy sweaty car the
next morning. The edge of the material is all flexible magnets.
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