AutoABC 45cm*11cm Hot Red Car Sticker Sound Music Activated Sensor LED Light Music Rhythm LED EL Light Lamp Equalizer Glow Size: 45cm*11cm Sheet thickness: 0.35mm It's a thin sheet with adhesive tape that can be sticked on rear windshield or side window Cool flashing car stickers increases safety while you driving a car at night It is really cool and also very easy to install, makes your car fashionable and amazing!!