In Leatts 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 & brain. Leatt helmets feature category-defining 360° Turbine Technology, the helmet is lined with 360° 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, & deflective impact energy. This technology has two key advantages, the reduction of rotational acceleration to the head & brain & the absorption of energy upon impact at concussion level. If you are looking for a helmet kit with free goggles take a look at the 3.5, or if you want increased ventilation & Leatt’s Pro-Fit liner, as well as free goggles, check out the 7.5, 8.5 & 9.5 models. Features Certified & tested: DOT + New ECE 22.06 Injected Polymer Compound shell in three sizes Brain injury reduction technology Reduces forces associated with concussion Ventilation channels to keep your head cool Inner liner is washable & breathable Designed to offer great neck brace mobility Visor has breakaway function to reduce forces to head & neck in a crash 3-year Leatt Helmet Replacement Program. Click here to know more Weight: DOT + ECE from 1070 gr. ± 50 gr. (2.36lbs) Plastic free packaging 360° Turbine Technology Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion Reduces peak brain rotational acceleration by up to 40% Note Please be aware, as long as nothing else is written in the item description: All helmets will be delivered only with the ECE certification by default