Bell 4Forty Air MIPS Bike Helmet - Matte Black - Medium

["Mips Evolve is designed to reduce rotational forces that can result from certain impacts. By integrating the Mips slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head.","A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with Mips®).","Fidlock™ is an easy-to-use magnetic buckle. This time-saving feature slides closed laterally for an effortless, secure fit.","Quick-adjust fasteners that help keep straps flat and properly positioned","Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear."]