In Leatt's world, crashes are a reality. Give yourself the best possible chance of keeping trauma to a minimum, buy the best helmet you can find to protect your head and brain. Leatt helmets feature category-defining 360 degrees Turbine Technology, the helmet is lined with 360 degrees turbines, which are discs constructed from an energy-absorbing material designed to allow the head to move slightly inside the helmet during a crash reducing rotational, direct, and deflective impact energy. This technology has two key advantages, the reduction of rotational acceleration to the head and brain and the absorption of energy upon impact at concussion level. The 3.5 is both ECE and DOT certified. Features: Injected Polymer Compound shell in three sizes Brain injury reduction technology reduces forces associated with concussion Large ventilation channels to keep your head cool even at lower speeds Inner liner is washable, breathable and has moisture wicking anti-odor fabric Designed to offer great neck brace mobility Visor has breakaway function to reduce forces to head and neck in a crash Emergency cheek pad removal 360° Turbine Technology reducesd peak brain acceleration by up to 30% at impact speeds associated with concussion, reduces peak brain rotational acceleration by up to 40% New high-performance certification ECE 22.06 Certified and tested: DOT + New ECE 22.06 Weight: DOT+ECE from 1250 g ± 50 g (2.75 lbs)