Protection Hybrid shell construction blends a durable exterior with a lightweight in-molded shell for durability where you need it most while keeping the helmet light 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 Certifications: ASTM F 2040, CE EN 1077: 2007 CLASS B, EN 12492 Fit / Integration Smith Flexible Fit System, featuring BOA® for a premium fit Designed for ultimate integration with Smith goggles for maximum comfort and venting AirEvac ventilation system integrates with Smith goggles for fog-free lenses Features 33 fixed vents for consistent airflow Lightweight, technical knit liner included Ionic+® antimicrobial lining offers sweat-activated odor control Integrated headlamp strap routing keeps gear in place Beanie and ball cap compatible Weight (Size M): 16oz / 400g