DNA MOTORING WVS-181 Dark Smoke Vent Window Visor Deflector Rain/Sun Guard, Pack of 4 Smoked lens to reduce glare and allows car to be parked with windows vented Reduces wind noise while driving with windows open for fresh air Allows windows to be opened a bit, and not have rain water enter through the opening Installs with included 3m adhesive tape (non-in-channel visor)