The Allure delivers enlightened style & a plush, fleeced tricot lining in the worlds lightest certified snow helmet. Helmet Features Lightweight in-mold construction Airevac 2 ventilation Self-adjusting lifestyle fit system Airflow climate control 9 vents Fleeced tricot lining Snapfit sl 2 ear pads Removable goggle lock Beanie compatible Skullcandy® audio compatible (available separately) Helmet sizing: (lifestyle fit system) + small 51-55 cm + medium 55-59 cm + large 59-63 cm Certification: astm f 2040, ce en 1077:2007 class b