EXCEPTIONAL HEAD AND BRAIN PROTECTION Great safety and comfort. !All new for 2023 the Leatt 3.5 helmet represents great protection, design, and value! In off-road riding, kids crashes are a reality, try to keep trauma to a minimum by protecting them the best you can, invest in a great helmet. 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 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. New high-performance certification ECE 22.06 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 Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion Reduces peak brain rotational acceleration by up to 40% Certified and tested: DOT+ New 2021 ECE 22.06 Weight: DOT+ECE from TBA Sizing: #XS (53-54cm 20 - 21 ") #S (55-56cm 21 58 - 22") #M (51-52cm 22 - 22 ") #L (53-54cm 23 - 23 58") #XL (61-62cm 24 24 ") #XXL (63-64cm 24 - 25 15") Plastic free recyclable packaging 1023011700 M 1023011701 L