Klim X1 Alpha Helmet Shell: A top of the line ADV helmet, positioned above the Krios Pro with more road / touring emphasis Carbon fiber hand-laid outer shell More room around the jaw / easier entry than Krios models Smoother, more aero shape with integrated spoiler for more comfortable highway miles Shell construction process reduces imperfections and excess weight Koroyd + EPS shell construction optimizes impact protection and reduces heat absorption with direct ventilation through Koroyd structure and EPS channeling Koroyd structures crush homogeneously for better impact energy absorption Shell, peak visor, ventilation ports, gasketing and liner system optimized for best-in-class aerodynamics and reduction in wind noise and vibration Helmet is goggles-compatible 3 shell sizes: Xs-M, L, Xl-3Xl 5 EPS sizes: Xs-S, M, L, XL, 2X-3X Intermediate oval to round oval head shape- Definitely more space at the temples than a traditional intermediate oval shape Shield: 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-calibrate for tight sealing Included Pinlock anti-fog lens insert optimized for X1 Alpha maintains optical class 1 clarity, huge FOV Photochromic face shield quickly transitions from dark to light Both face shields have optical Class 1 clarity Both face shields are optically correct, multi-thickness for minimized distortion Both face shields offer HD vision Both face shields have Uv400 protection Tinted & Photochromic face shields have infrared shielding for greatly reduced heat buildup Peak: Peak visor engineered for on-the-fly angle changes with tool-free adjustment, removal and reattachment Peak visor and rear spoiler designed to reduce drag, lift, and optimize directional-view control while riding at high speeds Ventilation: 2 adjustable, water-resistant forehead intake vents 1 adjustable upper chin guard direct diffuser vent for face shield 1 adjustable lower chin guard direct vent for cabin interior 4 Exhaust vents Comfort: 4-ride-mode versatility: Ride with or without peak / with or without face shield (Adv, Dual-Sport, Off-Road, Street) Channeled EPS + Koroyd construction for airflow and heat control EPS + Koroyd layering construction reduces heat transfer from shell Removable and washable moisture-wicking antibacterial premium Brrr Pro Cooling fabric lined cheek pads and crown liner Interchangeable/replaceable cheek pads and crown liner thicknesses within sizes Premium perforated goat leather trim on chin skirt with elastic gusset for comfortable on/off Chin skirt reduces buffeting Premium perforated goat leather and spacer mesh on neck roll for comfort, reduced buffeting Recessed ear pockets for comm system speakers Safety: DOT and ECE 22.06 certified Titanium D-ring chin strap closure system The Klim X1 Alpha Helmet isn't just an evolution, it's the undisputed pinnacle of adventure helmet technology. Integrating an advanced Koroyd head protection system, the X1 Alpha absorbs impacts efficiently while exhausting heat better than any helmet before it. Add in next-gen Optical Class 1 face shields featuring infrared heat shielding and a massive direct control ventilation system and you get a helmet that actively fights rider fatigue. Ride protected with Klim in the most groundbreaking adventure helmet ever built. Direct Control Ventilation When wrestling a heavyweight ADV bike through sand, you need massive airflow. The X1 Alpha delivers with a precise venting system, adjustable forehead intakes, a chin guard diffuser to clear fog and large exhaust ports. Coupled with channeled Koroyd, it pulls in cool air and expels heat effectively. Advanced Koroyd Protection Say goodbye to traditional EPS foam compromises. The X1 Alpha uses advanced Koroyd structures that crush evenly to absorb impact efficiently. Plus, these welded micro-tubes serve as a powerful heat exhaust, instantly releasing heat from your head instead of trapping it like a thermos, during slow technical climbs. Class 1 Clarity & IR Shielding See the trail as it is, unfiltered, unfogged. Included are clear and Photochromic face shields offering HD, distortion free Optical Class 1 clarity. The real innovation: Uv400 protection and infrared shielding, significantly reducing heat buildup to keep your face cool and your focus on the horizon.