It blocks harmful UV rays, by preventing the sun from fading, tearing or damaging the inside of your car. Blocking 99% UVA/UVB, it also helps protect against skin damage and sensitive eyes. It helps control the temperature of your vehicle by covering the windows, which also increases your privacy inside the vehicle. It can make accidents less dangerous by acting like a bandage by holding shattered glass together when it breaks, reducing the risk of lose shards that can cause harm to the driver or passenger. Plus it simply looks amazing!