PowerBridge molded force absorberFidlock magnetic closure systemGoggle holder with anti-slip functionMaxiFlow air channels effective even at low speedsMolded shock-absorbing foam for high shock absorptionMaximum ventilation with 19 ventsStrap division and adjustment system developed for a customized fit, easy and comfortableMoisture-wicking, soft-touch chin strapsMoisture-wicking, washable and breathable anti-odor interiorLightweight composite polymer shell in three sizesCertified and tested : EN1078, CPSC 1203, ASTMF1447360° Turbine technologyReduces peak brain acceleration by up to 30% at impact speeds associated with concussionReduces peak brain rotation acceleration by up to 40%Weight: from 350 gSize#S (51-55cm - 20-21 58") #M (55-59cm - 21 58 - 23 14") #L (59-63cm - 23 14 - 24 34")