?? USE: Any vehicles that has small kids or babies on board. The sticker promotes AWARENESS and SAFETY which is in line with the US Department of Transportation guidelines for warning signs. ?? PURPOSE: SAFETY FIRST! Our conventional baby on board stickers are bright yellow making them highly visible but, better yet they are also SEE-THROUGH from the inside of the car making reversing and looking in your rear view mirror safe and easy. This is done in the manufacturing process. The outside of the sticker will be bright yellow and then it will be see-through from the inside. ?? ADHESION: The waterproof sticker uses strong adhesive to ensure it won’t peel off your car window and it’s built to endure all weather conditions. Since it is applied on the outside of the car it can be used with TINTED WINDOWS. ?? INSTALL: Firstly, clean down the area of glass were the sticker will be applied to ensure it is free from dust. Then peel the baby on board decal sticker label off and apply it firmly. It’s that simple! Once applied no more maintenance is required. For maximum effectiveness it’s best to apply the sticker to the back window or both of the side windows. ?? LIFETIME WARRANTY: If for any reason you don’t love our stickers, we offer a replacement for free at any time, no questions asked + 30 day money back guarantee.