Purpose-built for the street. A new benchmark in comfort, quiet, stability and ventilation. Arai applied the same tireless 24-7 focus devoted to our race helmets to designing it, refining and adapting proven concepts to a new purpose. On the rounder end of the head shape spectrum, the Quantum series has always been the "go-to" helmet of choice. The new Quantum-X brings that shape back in a feature rich package. Round oval shell for head shapes with an even balance between length and width. Quick-release lever for side pod and faceshield. Clear anti-fog Pinlock insert for all-season visibility. QVF and QVR upper ventilation ducts offer more adjustment and better flow-through performance. DOT Approved. Meets The FMVSS 218 Standard. ES chin cover increases exhaust from mouth area while reducing wind noise. Compatible with VAS-V Pro Shade system. SNELL-2020