Today's aerodynamic vehicles slice through the wind with ease, and in the interest of fuel economy, automotive designers have all but eliminated rain gutters. This is why you NEED to install a set of rainguards on your driver and passenger doors. Not only do they keep rainwater from dripping onto the door panel and switches, but they also allow you to park your vehicle in the hot sun with the windows rolled down about 2 inches. The vehicle can then vent hot air out, rain or shine. Installation is easy and permanent with the 3M adhesive tape. Everything's in the box!