The solution for gram-counting purists: the Vapor is ultralight, ultra-breathable, and ultra low-profile. - Kevlar and carbon are sandwiched between co-molded EPS foam and polycarbonate shell to keep weight low without sacrificing protection - Suspension system can be tucked inside helmet for more compact storage in packs or haul bags - Secure headlamp attachment clips come out for added weight savings - Massive ventilation ports allow for maximum airflow without compromising protection - Ratcheting strap with molded push buttons for quick, secure micro-adjustments - Fabric-covered foam pads increase comfort.