Leatt Helmet MTB Gravity 4.0 Bicycle Helmets The Gravity 4.0 helmet delivers downhill certified protection in a breathable, lightweight package. This helmet is the ideal choice for enduro racers, park laps, and high speed e-MTB missions. It combines advanced safety engineering with a highly ventilated design to ensure dependable protection when racing against the clock. Advanced 3-in-1 Safety System DH certified lightweight polymer shell construction. In-molded dual density EPS and EPO impact foam for superior energy absorption. Patented 360 Turbine Technology helps reduce peak brain acceleration during impacts. Specialized turbine discs absorb low speed impact energy associated with concussions. System designed to significantly reduce rotational forces to the head and brain. Visor equipped with a breakaway function to further minimize rotational impact force. Ventilation and Climate Control Maximized cooling with 22 strategically placed vents that work even at low speeds. Removable mouthpiece ventilation cover allows for customized airflow. Dri-Lex moisture wicking inner liner provides breathable and anti-odor performance. Washable interior padding ensures long term hygiene and comfort on extended rides. Technical Features and Convenience Fidlock magnetic closure system for fast and easy one handed operation. Specifically engineered for optimal neck brace compatibility. Lightweight design starting from only 850 grams. Plastic free packaging to support environmental sustainability. Backed by a 3 year Leatt Helmet Replacement Program. Certifications and Standards AS/NZS 2063:2008. ASTM F1952-10 (Downhill Certified). EN1078. CPSC 1203.