DESIGN & TECHNOLOGY: Eight fixed vents for consistent airflow Aleck(R) 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 Lightweight in-mold construction fuses the exterior shell and EPS foam for a one-piece design that's lightweight and durable Zonal KOROYD(R) coverage for lightweight, energy-absorbing and ventilated impact protection Mips(R) Brain Protection System reduces rotational forces caused by angled impacts to the head 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