Comfortcare car sign Displays different colours of light through the words (Baby on Board). Day and Night lit-up car sign Features: Display prominently in your rear side windows Alerts other drivers Soft lighting of words in different colours Push Monkey's Nose to switch unit ON/OFF  Durable suction cups to secure unit to window Also Suitable for tinted windscreens 100 % visibility in all weathers, fog snow, rain and blizzard