What are the pros and cons of rain guards?

[Espírito Santo]

Prevents rainwater from entering the vehicle, avoids rain being blown inside, ensures airflow does not affect driving or passengers, provides shade, reduces glare that could impair driving visibility, improves interior temperature, and helps eliminate odors. However, the shape of rain guards may not perfectly match the contour of the window edges, potentially leading to minor warping or gaps in certain areas. These imperfections can become sources of wind noise and inadequate adhesive strength. Installation method for rain guards: Peel off the 3M adhesive on the rain guard and gently attach it along the upper edge of the window. Once the positioning is confirmed to be accurate, press firmly along the edges to ensure the rain guard adheres securely to the vehicle. Material of rain guards: A protruding rain visor made of synthetic resin or engineering plastic.