Review on FrostGuard Sedan Weather-Resistant Rear Window Snow Cover & Frost Blocker by Jerome Pernell

I was really looking forward to this article. Very easy installation. The concept is great, but it doesn't go very well with my car. I put it on the back of a Nissan Sentra and it fits but not secure enough. Every time the wind blows, it blows away from the car and the snow still comes in the window. Several times he even broke off the car (on one side) and flew into the air (he was afraid of damaging the car or flying away altogether). I'm sure it would suit a large sedan or SUV much better. but in my experience it doesn't work that well on smaller 4-door cars.