Fiberglass and carbon fiber composite outer shelltwo outer shells and four eps sizes for the most accurate fitdimensions of outer shell and eps optimized using fem finite element method analysisivs integrated ventilation system with wide ducts hollowed into the eps shell optimized in wind tunnel testingcentral front air intake recessed in outer shell profile with a high-capacity direct ductrear spoiler integrated in the outer shells profileagv share communication system readysanitized dry-comfort fabricremovable lining, breath deflector, neck roll, and chin curtainxqrs extra quick release system for rapid shield removalvisor with micro-opening demist systemscratch resistant, anti-fog, 100 percent uv protective clear face shield: gt2-1 xs-s-ms and gt2 ml-l-xl-2xisv integrated sun visor scratch-resistant and anti-fog; tool-free replacementchin strap with a metal double d-ring retention systemdot and ece22. 05 Certified.