Why window visors you ask?
They improve the indoor climate and make it possible to enjoy fresh air circulating, even if it rains or snows.
At high solar radiation they avoid the uncomfortable heat in the vehicle interior when the window just above the lower edge of the wind remain open.
Rain and wind deflectors optimize the air circulation inside the car and allow relaxed driving.
Here are the facts:
-No rain through open side window
-Reduced temperature inside the car during summer
-Optimised air circulation
-More security and relaxed driving
-Licensed following StVZO by ABE (Allgemeine Betriebserlaubnis)
-Material: high quality cast acrylic glass