Note: Please clean the edge of your car before you install the strip, which is very important. If you have any questions, please contact us. --Important: Extreme temperatures will result in poor adhesive performance. Apply this seal only if the air and surface temperature is between 55°- 104°F(13° - 40°C). If you find that the adhesive of the weatherstripping is not sticky enough, you can apply the adhesive tape attached in the package for a better result. --L shape design,non-toxic,more durable and flexible.Noise Reduction, Waterproof, Dustproof & Soundproof & Windproof.High temperature resistance & cold resistance, prevent ultraviolet light. .