Selection of materials
At present, the most popular material on the market is aluminum pvc. The aluminum film can effectively reflect light, and the PVC bubbles inside can effectively isolate the conduction of heat energy, thus playing the role of heat insulation and cooling. So the size of aluminum film and the thickness of pvc material determine the application effect. When purchasing this sunshade, you'd better choose the model with suction cups. Although it takes a lot of time to place each time, the model without suction cup is more likely to fall from the inside of the glass, thus losing the significance of using sunshade.

Different colors reflect and refract light differently, whether on the front or on the side. Black, red and a little warm color are not recommended. Black is the most heat absorbing. It's bad to use it, but it's counterproductive to use it. The visual and sensory coolness of warm colors is also greatly reduced. The recommended colors are blue, green and white. The sunshade effect of different materials of automobile sunshade is also necessary.

If you have a sun visor, many people may feel that the front is OK. It's unnecessary to buy it back. I think that for a long time, waiting passengers will cover the other side when they see the sun, and the shading effect will also decrease by 40%. The temperature rise is not only on the light side, light reflection is everywhere. The effect will be better if it is used with the side shield.