Ovation Vantage ERT (Energy Reduction Technology) is a high-performance helmet. Perfect for the ring or trail. ERT foam reduces rotational and linear force head impacts at 18-21% improvement for rotational impacts and 3-5% improvement during linear impacts. Features & Benefits: 8 Front top and rear vents for maximum ventilation Bug net Hybrid-Tech shell & EPS liner for optimal impact resistance Harness strap system for a secure and stable fit Heat sealed pad to wick away sweat for increased comfort Materials Shell ABS, Liner EPS Product Care Instructions Wipe shell clean with soap and water, machine wash removeable liner