Heat shields for the car's windshield and side windows fulfils several purposes.
They can reflect the sun's rays on hot summer days, keeping the temperature in the car down, thus ensuring a more comfortable drive after the car has been parked in a sunny spot.
It also serves as insulation on cold days thus providing a more comfortable temperature in the car.
Last but not least, the heat shields provide privacy in case you need to sleep overnight in the car.
