【Avoid Traffic Accidents】: We all know that when you are about to open the car door, it is easy to accidentally hurt the car coming from behind or pedestrians, and then cause traffic accidents. You don't have to worry about that when you have our highly reflective warning stickers! The night visibility warning stickers make your travel safer. 【Reliable Materials】: The door reflective sticker is made of high-quality PET material, which is high-quality corrosion-resistant, waterproof, sun-resistant, rain-resistant, and durable. We use full prismatic reflection technology to provide you with the highest visibility. Even at night, this highly effective reflective sticker is clearly visible. 【Super Sticky】: The self-adhesive design is very easy to install. You just need to clean the dust or residue from the target location with water and wait for it to dry. Peel off the protective film on the back and press for a few minutes to complete the installation. Rest assured that it will not damage the car paint and you can easily tear it off when you don't need to use it. 【One Size Fits All Cars】: The mini size of 3.62 x 0.98 inches is suitable for all vehicles, such as cars, SUVs, motorcycles, bicycles, etc. In addition, it is not only a car door warning sticker, but you can cover it on other obvious places on your vehicle to improve traffic safety. It reduces the probability of traffic accidents to improve driving safety. 【Package Includes】: You will get 4 x OPEN car warning stickers.