Perhaps the most fabled name in the entire Arai lineup, the Corsair has long been renowned as one of the most advanced, highest quality helmets available anywhere in the world. It represents the culmination of Arai's vast experience in helmet design and unwavering focus on rider protection. And with features like the ingenious VAS shield mechanism, dramatically improved air flow and ventilation and an Eco-Pure liner, the Corsair-X has certainly earned its place as Arai's flagship model. The Corsair-X has Arai's Intermediate Oval (IO) interior fit shape. VAS Shield Mechanism: