DH certified lightweight Polymer shell in two sizes Maximized ventilation with 22 vents Removable mouthpiece ventilation cover Fidlock magnetic closure system 360° Turbine Technology Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion Reduces peak brain rotational acceleration by up to 40% Dri-Lex® moisture wicking, breathable, anti-odor and washable inner liner Optimal neck brace compatibility Visor with breakaway function for rotational reduction in a crash In-molded EPS + EPO impact foam for superior energy absorption Real weight (M): 865 g Certified and tested: AS/NZS 2063:2008, ASTM F195210, EN1078, CPSC1203.