The IS-33 II is lightweight open face helmet with a superior fit thanks to the advanced polycarbonate composite shell designed using advanced CAD technology. Protection from the airstream is afforded by the easily opened UV-treated flip-up visor which utilises the RapidFire II visor replacement system. This simple and secure visor ratchet system provides ultra-quick, toolless removal and installation. For when the sun comes out there is the convenient one-touch integrated sun visor, a smoke-tinted 3-stage adjustable visor which deploys quickly and easily. Comfort in the sunshine is assured with the Advanced Channelling Ventilation System (ACS), a full front to back airflow which flushes heat and humidity up and out. The anti-bacterial SuperCool moisture-wicking interior is both removable and washable.