The GT1 Expedition Helmet is the pinnacle of modular touring helmet technology. Advanced KOROYDA(R) + EPS technology for impact absorption and heat management, aerodynamically optimized shell and visor construction, next-gen face shields, and a direct control ventilation system all combine to create unparalleled comfort and protection. A carbon fiber modular chin bar rotates with a brilliantly designed proprietary hinge mechanism with flush-to-shell closure, reducing drag and improving aerodynamics. Ride protected in the most groundbreaking touring helmet ever built Carbon fiber hand-laid outer shell Shell construction process reduces imperfections and excess weight Hand laid carbon fiber chin bar reinforced with EPS for impact protection Dual post stainless steel chinbar latch secures chinbar in closed position Intuitive chinbar release button moves with rider&&';;s natural movement during engagement KLIM Proprietary hinge plate mechanism motion path closes face shield flush to shell, resulting in best-in-class aerodynamics and noise reduction KOROYDA(R) + EPS shell construction optimizes impact protection and reduces heat absorption with direct ventilation through KOROYDA(R) structure and EPS channeling KOROYDA(R) structure crushes homogeneously for better impact absorption Shell, face shield, ventilation ports, gasketing and liner system optimized for best in class aerodynamics and reducing wind noise and vibration Micrometric quick release chin strap closure system Clear & photochromic face shields included Tool-free face shield removal is fast & easy Eye port gasket engineered to reduce vibration, noise and increase resistance to harsh weather conditions Face shield side plate mechanisms engineered to self-adjust for a tight seal Included PINLOCKA(R) anti-fog lens insert optimized for GT1 Expedition maintains optical class 1 clarity, huge FOV Photochromic face shield quickly transitions from dark to light Both face shields are optically correct, multi-thickness for minimized distortion Both face shields have optical Class 1 clarity, even with PINLOCKA(R) installed Both face shields offer HD vision Both face shields have UV400 protection Tinted & Photochromic face shields have infrared shielding for greatly reduced heat buildup ECE 22.06/DOT certified 1 adjustable forehead intake vent 1 upper chin guard direct diffuser vent for face shield 1 lower chin guard direct vent for cabin interior 4 Exhaust vents Channeled EPS + KOROYDA(R) construction for airflow and heat control EPS + KOROYDA(R) layering construction reduces heat transfer from shell Removable and washable moisture-wicking antibacterial premium BrrrAdeg fabric lined cheek pads and crown liner Interchangeable/replaceable cheek pads and crown liner thicknesses within sizes Premium perforated goat suede leather trim on chin skirt with elastic gusset Chin skirt reduces buffeting 3 shell sizes for optimal fit (XS-M, L, XL-3XL) 5 EPS thicknesses for optimal fit (XS-S, M, L, XL, 2X-3X) Recessed ear pockets for comm system speakers