We simply haven't space here to fully describe the many innovations built into the new Corsair V ($732 to $870; sizes XS-XXL). We will, however, tell you what Arai told us: that the Corsair V represents decades of focused devotion to the evolution of helmet design. Indeed, structurally strengthening Peripheral Belting not only reduced the overall weight of what already was an aerodynamic, compact shell, it made possible a 10mm-wider eyeport. That may not sound like much, but in actual use on the road or track, it's a big deal. High marks also to new brow-vent channels. Incoming air is directed to the temples and, as a result, the temporal artery, cooling blood flowing to the brain. Also worth noting is the back-of-helmet, five-way-adjustable AirWing: Run it all the way down to cut drag and reduce buffeting during flat-out speed blasts or in the top-most position when sitting more upright. Of arguably greatest importance is the Emergency Cheekpad Release System. A quick tug on the integrated pull-tabs liberates the pads, easing removal of the helmet in the event of a crash.