POC's Octal Aero Helmet doesn't have the egg-shaped alien look of some aerodynamic lids, but its refined design mean you get the same speedy benefits without the weird look and with added features like vents, size adjustment, and a seriously high-vis finish. Designed with input from pro teams, in-house afficionaos, and POC's short-but-illustrious helmet history, the Octal Aero offers extended rear coverage for extra protection--a helmet's first job, after all--and is made primarily from EPS foam, a light but strong material that spreads forces around the helmet instead of concentrating them in one spot. The Unibody shell wraps the foam in a single piece of material for increased durability and aerodynamics, and the vents are strategically placed to optimize smooth airflow as well as killer cooling. The details make the difference though, and POC packed the Octal Aero full of 'em. The click-wheel size adjustment system cinches the helmet down around your head for a snug and comfortable fit, and the molded-in straps give a clean look and help you slide through the air like a greased seal through the water. POC also finished this lid off with its signature AVIP (Attention Visibility Interaction Protection) design, which combines tons of high-visibility elements to make you stand out on the road.