Leatt - 2.5 Off-Road Helmet KitNew high performance certification ECE 22. 06 Injection 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 and breathable Designed to offer great neck brace mobility Visor has breakaway function to reduce forces to head and neck in a crash 360oTurbine Technology: Reduced peak brain acceleration by up to 30% at impact