Protection Lightweight in-mold construction fuses the exterior shell and EPS foam for a one-piece design that's lightweight and durable 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 Available in Round Contour Fit to better match rounder head shapes Features Fixed vents for consistent airflow Nine vents Plush, fuzzy lining adds warmth and comfort Removable Snapfit SL2 ear pads add warmth and are Aleck™ audio systems compatible Removable goggle strap lock for streamlined shell when goggles are worn under helmet