Key Features:Lightweight polymer shell in three sizesRemovable chin bar with easy push-button systemSunglasses dock port for easy, secure storageFidlock magnetic closure system360° Turbine TechnologyReduced peak brain acceleration by up to 30% at impact speeds associated with concussionReduces peak brain rotational acceleration by up to 40%Adjustable visor with breakaway function for rotational impact force reductionIn-molded impact foam for superior energy absorptionMaximized ventilation with 20 vents effective even at low speeds Moisture wicking, breathable, anti-odor and washable inner linerCertified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203Chin bar passes ASTM impact testingWeight:From 650g (1.43 lbs). Without chin bar: from 330g (0.73 lbs) Sizing #XS (JR) (50-54cm19 67 - 21 26")