The built-in Drop Down Sun Shield allows for easy transition from dark to bright riding conditions. With just the flip of the switch, you're off and riding!! The included, removable, padded size adjuster ensures a perfect comfortable fit. No more fighting with the traditional D-Ring closure... Easily remove or strap your helmet, even without removing your gloves. Open face helmets have an open cutout in a band across the eyes and nose and often include a clear or tinted transparent plastic face shield known as a visor, that generally swivels up and down to allow access to the face. Some of these helmets include vents to increase the airflow to the rider.