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Highly protective Leatt MTB 4.0 All-Mountain helmet. Ideal for the mountains, the MTB 4.0 All-Mountain bike helmet is equipped with the revolutionary 360 Turbine Technology, specifically designed to protect the rider from the strongest impacts on the brain. Make sure you always have the right equipment in case of an accident! 360 Turbine technology is a valid alternative to the MIPS system and is able to reduce the risk of concussion by up to 30% and that of rotational acceleration of the head and brain by up to 40%. The helmet contains turbines made from Armourgel, a 3D molded material that absorbs energy. The advantage lies in not having to use a second shell, thus increasing the overall comfort of the fit. With its 13 air intakes, the helmet offers maximum ventilation, even at low speeds. The 4.0 All-Mountain cycling helmet adapts perfectly to hydration systems, while the Fidlock magnetic attachment system makes it adaptable precisely by turning just a knob. The helmet is also equipped with a new Dri-Lex breathable, anti-odor, easily washable inner lining and a space to safely insert the sunglasses: these are essential details for lovers of All-Mountain disciplines!