3M Black Chrome utilises a metallised film technology, providing maximum heat rejection and significantly improved comfort. This same metal layer creates a unique look to your vehicle, with higher exterior reflectivity. These shaded films are designed to reject solar heat that is produced from visible light. Black Chrome rejects up to 72% of the heat coming through your windows. 3M Black Chrome films also provide significant glare relief, allowing only 10% to 40% of the light into your car.