Lazer Helmet Sphere Mips Lightweight Protection, Dialed-In Fit Built for top-level racing and training, the Sphere MIPS is one of Lazer's lightest helmets yet. A redesigned fit system and improved ventilation come together in a sleeker profile that feels light as air on the ride, without giving up the protection you need on the road. The Advanced Rollsys(R) (ARS) fit system adjusts from the top of the helmet rather than the back, distributing pressure evenly and staying out of the way of caps or ponytails. Features Advanced fit systemadjusts via a thumbwheel for progressive, pressure-free fit18 vents oriented at a 15-degree anglefor maximum airflow in the riding position MIPS(R) protectionhelps reduce the risk of rotational injury Internal polycarbonate layerkeeps the foam together in the event of a crash for better protection from successive impacts Adjustable, ponytail-friendly head basketfor a comfortable, secure fit SPECIFICATIONSIntended Use Road Cycling, Racing, Training Protection MIPS(R)Material EPS foam, polycarbonate, nylon Fit System Advanced Rollsys(R) (ARS)SIZINGSize Head Circumference (cm)S52 - 56M55 - 59L58 - 61XL61 - 64Uniszie54 - 61 | Lazer | Helmet Sphere Mips Men's | Size Small In Matte Black | Nylon