Protection Lightweight in-mold construction fuses the exterior shell and EPS foam for a one-piece design that's lightweight and durable 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 Select colorways offered without Mips® system Certification: ASTM F 2040, CE EN 1077:2007 CLASS B Fit / Integration Designed for ultimate integration with Smith goggles for maximum comfort and venting AirEvac ventilation system integrates with Smith goggles for fog-free lenses Self-adjusting lifestyle fit system flexes to match your head shape for maximum comfort Features Eight fixed vents for consistent airflow Aleck® audio systems compatible Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible Removable goggle strap lock for streamlined shell when goggles are worn under helmet Beanie compatible Weight (Size M): 14oz / 400g