Intermediate-round oval shape: The Corsair-V has Arai's intermediate oval interior fit shape, but one nearer the rounder end of the range. Side-vent Exhaust ports: The sculpted exhaust ports, designed to clear interior air and heat more efficiently, have also been shown to work in concert with the Corsair-V's AirWing to greatly add lateral helmet stability at speed. (Arai test riders have reported this benefit is most noticeable on the track when popping up into the airflow under braking). Patented AirWing and DF-10 Diffuser Arai's exclusive, adjustable AirWing is designed to greatly reduce drag, turbulence and buffeting. It provides unprecedented aerodynamic performance options via five hand-adjustable "attack angle" positions from full-tuck racing to upright everyday street riding. The DF-10 offers enhanced air inlets to increase airflow efficiency even better than its predecessor. A middle intake slot creates more negative pressure "pull" for even faster venting of stale air. Larger upper vent toggles work with thick gloves, and the center top vent is re-sculpted for more air intake. Latest generation Dry-Cool vented neck roll: The fully removable liner, utilizing Arai's third generation Dry-Cool material, transfers heat and moisture away from the rider quickly and efficiently so that you stay dry and cool, hence the name. The repositioned rear mounting-snaps, closer to the liner bottom, provide a more secure fit. The neck roll is not only removable and replaceable, it adds yet another stale-interior-air exhaust outlet through channels in the EPS liner, not to mention making complete helmet cleaning a breeze and, in the case of damage, a snap to replace. Patent-pending FCS cheek pad design and exclusive 5mm peel-away layer FCS uses an innovative and exclusive spring support built into the cheek pad to add just the right amount of pressure when needed while being worn, but then easily moves out of the way for easier helmet on-off.