did not work as good as i thought it would
despite what they say it does, i noticed very little difference when using it against not using it. especially when i used it while i was working by the time i got out the sun had shifted and it wasnt even on because it has to be in DIRECT sunlight. i wouldnt recommend it, maybe if you had one on each window of your car it may help but one is definitely not enough
Rating: 2 stars