Bell super Dh Mips is a downhill / BMX helmet with all technology, experience and research taken from moto cross. Full lightweight shell in In-Mold Polycarbonate with MIPS, adjustable screen, integrated / removable camera mount, magnetic buckle - Fidlock® Buckle, ventilated with 19 channels Overbrow Ventilation.Float FitDHNew adjustment system that provides a perfect fit with a simple touch.MIPS® - Multi-directional Impact Protection SystemThe helmet has integrated MIPS that protects the brain against the rotation that occurs in a crash. Rotational violence against the brain can cause the most serious brain damage. With MIPS, the outer part and inner part can slide relative to each other, reduce rotation and counteract damage to the head and brain. Tests and studies show that MIPS significantly reduces the force and reduces the risk of serious brain damage. The helmet must generally be replaced after an external impact, such as a bicycle accident. Certification CPSC BicycleCE EN1