High Impact ABS Material Shell. ISI Certified with IS no.: IS 4151:2015 and CM/L no.: 1650145. Removable and washable lining, it is also odor resistant helping the helmet stay fresher, longer in between cleaning. Metallic Quick release silent buckle. Scratch resistant & UV resistant. Visor in optical polycarbonate, easy Visor mechanism. 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.