It’s the type of window tint. Ceramic cause the heat to reflect so inside is cooler. Doesn’t just block the light. It blocks the UVI’m probably older than most of you guys on here at 68 but have loved a 3 of my expeditions and my new platinum is on the way here right now. The thing that I am wondering is this ceramic tint that a few of you have mentioned. What it it and where do you have it put on the car.