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, CPSC, CE EN1078 Designed for ultimate integration with Smith goggles for maximum comfort and venting AirEvac™ ventilation system integrates with Smith goggles for fog-free lenses Adjustable dial fit for easy, on-the-go size adjustment Regulator climate control allows easy, one-handed vent adjustment 14 vents Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible Plush, fuzzy lining adds warmth and comfort Outdoor Tech™ audio system compatible Smith Mirage MIPS Helmet Womens