Protection Zonal KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head Integrated skeletal structure creates a roll cage for added strength and impact protection Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older as well as CE EN 1078, NTA8776 E-Bike and AS/NZS 2063 Fit / Integration Designed for ultimate integration with Smith performance eyewear and goggles for maximum comfort, venting and storage convenience AirEvac ventilation system integrates with Smith goggles and eyewear for fog-free lenses VaporFit dial adjustment system offers 270-degree fit adjustment with the turn of a dial Features 19 fixed vents for consistent airflow Three-position adjustable visor Ionic+® antimicrobial lining offers sweat-activated odor control Lightweight, low-bulk single-layer webbing Y-strap divider keeps helmet straps flat and close to the face Front eyewear storage channels Weight (Size M, Mips®): 14 oz / 400 g