Technology: Mips(R) brain protection system reduces rotational forces caused by angled impacts to the head Ionic+(R) antimicrobial lining offers sweat-activated odor control Zonal KOROYD(R) coverage for lightweight, energy-absorbing and ventilated impact protection Features: Integrated skeletal structure creates a roll cage for added strength and impact protection 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 19 fixed vents for consistent airflow Lightweight, low-bulk single layer webbing Y-strap divider keeps helmet straps flat and close to the face Front and rear eyewear storage channels