Solar energy reaching your car's glass includes visible light, ultraviolet and infrared, and infrared is the invisible part you feel as heat on your arm. Kepler's nano-ceramic films are constructed to work on that solar energy at the glass, rather than relying on shade alone, which is why lighter options in the range are still worth considering. Keeping heat out of the cabin makes the car more comfortable to get into after it has been parked in the sun, and it eases the load on the climate system while you drive. Remember that visible light transmission describes the light passing through and is separate from solar heat performance, so compare the exact film and shade you are considering.
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