This is a lot of helmet for the price. It offers extensive protection around the head and a deeper rear coverage. It also includes Leatts 360 Turbine technology, which is proven to reduce the risk of concussion by up to 30% and rotation forces upon impact by 40%. With 14 vents and Maxiflow air channels, the lightweight construction also offers great ventilation for those hot days.Key Features:Polymer Compound shell in three sizesMaxiFlow impact foam air channels effective even at low speed360° Turbine TechnologyReduced peak brain acceleration by up to 30% at impact speeds associated with concussionReduces peak brain rotational acceleration by up to 40%Extended rear coverage for added protectionAdjustable visor with breakaway function for rotational impact force reductionIn-molded impact foam for great energy absorptionMaximized ventilation with 14 vents effective even at low speedsMoisture wicking, breathable, and washable inner linerCertified and tested: AS/NZS 2063:2008, EN1078, CPS