Can rain deflectors really block rain?

[VonAyla]

Rain deflectors can block rain. Here is the relevant introduction: 1. Function: Rain deflectors are attached to the rearview mirror with double-sided tape. When it rains, the deflectors can greatly prevent raindrops from splashing or flowing onto the rearview mirror, ensuring that the rearview mirror always provides the driver with a clear view. 2. Benefits: The formal name of rain deflectors is 'sun and rain visors.' Their biggest advantage is that during rainy days, they allow the window to be rolled down to a certain height without letting raindrops enter. Moreover, they leave a small gap between the window and the roof, which also serves a ventilation purpose.