What is the purpose of rain guards?

[ErinMarie]

Rain guards serve the following purposes: Rain guards effectively prevent rainwater or strong wind from directly entering the car, improving ventilation efficiency. When driving in the rain, opening the window can also prevent window fogging. Rain guards refer to a type of car accessory that can be used both on rainy days and sunny days. They are protruding rain visors made of synthetic resin or engineering plastic material installed along the top edge of car windows. Additional information: The quality of rain guards mainly depends on two aspects. First is the material of the rain guards; some are made of plastic, while others are made of synthetic resin. Resin offers better quality in terms of thickness and flexibility. Second is the adhesive used for the rain guards; some domestic adhesives may not stick firmly or tightly, allowing rainwater to seep through gaps during heavy rain. As for wind noise, there is actually little difference before and after installation.