Leatt MTB 4.0 Helmet AllMtnIncredibly comfortable, the Leatt MTB 4.0 Helmet AllMtn delivers the best in head and brain protection technology and an affordable price.The all mountain helmet protects your head with Leatt’s unique 360-degree Turbine Technology. This advanced technology reduces both rotation acceleration and concussion level impact energy to your head and brain.The helmet is also packed full of useful features including a universal sunglasses dock which lets you safely store your sunglasses under the visor when not in use – protecting from scratches and unwanted impacts. Meanwhile, the adjustable visor opens up enough to place your goggles underneath, so you don’t have to constantly remove them.SpecificationsWeight: From 850g (1.8 lbs)Sizing: S (51-55cm – 20-21 5⁄8”), M (55-59cm – 21 5⁄8- 23 1⁄4”), L (59-63cm – 23 1⁄4 - 24 3⁄4”)Certified and Tested: AS/NZS 2063:2008, EN1078, CPSC 1203FeaturesLightweight Polymer Compound shell in three sizesBrain injury reduction technologyReduces forces associated with concussionSunglasses docking port for easy and secure storageMaximised ventilation with 13 vents effective even at low speedsFidlock magnetic closure systemMoisture wicking, breathable, anti-odour and washable inner linerAdjustable visor with breakaway function for rotational impact force reduction360-degree Turbine TechnologyReduced peak brain rotational acceleration by up to 40%In moulded EPS and EPP impact foam for superior energy absorptionBuy Leatt Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.