Window deflectors are made specially for the mentioned car model.
Window deflectors are glued,they are glued with the double-sided tape on the outside frame of car's door.
The deflectors are not just decorative element as they reduce pollution of car's windows and protect interior from the precipitation. Window deflectors allow to make additional ventilation of the interior.
The deflectors are sold in the original package including installation manual.
Picture shows the real measurements,color - black semitransparent.