the macally mventholder securely mounts your mobile device to the air vent on your car’s dashboard without obstructing your view while you drive!! features: car air vent mount holder offers the best viewing angle for navigation without blocking your driving view soft silicon adjustable clamp to mount your iphone/smartphone securely on most standard horizontal and vertical air vents support stand to help keep the vent mount angled properly fits mobile devices with the bulkiest cases sized between 1.97 and 4.5 swivel ball joint to accommodate optimal viewing angles and 360 rotation one hand quick snap lock and quiet hydraulic release benefits: enhanced holder safeguards your phone while you’re driving clip on design allows for secure hold fits mobile devices with the bulkiest cases sized between 1.97 and 4.5 padded arms to prevent scratches