Design and Details Lightweight in-mold construction MIPS(R) Brain Protection System reduces rotational forces caused by angled impacts to the head CPSC and CE EN 1078 certified AS/NZS263 certified Designed for ultimate integration with Smith performance eyewear for maximum comfort, venting and storage convenience AirEvac" ventilation system integrates with Smith eyewear for fog-free lenses VaporFit" dial adjustment system offers 270-degree fit adjustment with the turn of a dial 21 fixed vents for consistent airflow Sweat-wicking liner insulates and fights odors Lightweight, low-bulk single layer webbing