The reason our A3 shade is so effective is because of the innovative triple layer protection fabrication that works together as a team to repel harmful vibes. The first layer consists of a highly reflective silver screen that says: "Brick wall waterfall, the sun thinks it has it all – but it don't and I do! The foam middle layer soaks up any warmth or rays that may peak through to help out the felt interior not only protect but drop the in-vehicle temperature by up to 40 degrees. When you combine this multi-level protection with a non-abrasive material that doesn't scratch or ruin your dash, you've got a highly functional A3 sun shade at a great price.