The Z20 is the result of years spent analyzing how helmets fit, optimizing aerodynamics, reviewing test data, gathering real world feedback, and applying our cumulative knowledge of impact management. Our unique progressive layering energy management system utilizes two separate layers of hard shelled EPS foam in addition to Integrated MIPSenabling us to improve impact performance via multi-density foam and at the same time deliver a more compact overall shape, sleeker design and maximized ventilation. And thanks to a smart combination of the MIPS layer and retention system, the Z20 sets a new standard in fit and comfort. Superb fit is further optimized with the Float Fit Race retention system, featuring height and width adjustable cradles and an intuitive, easy to use tension dial, and then finished off with our comfortable and sweat-wicking X-Static padding. No matter how long, hot or hard the ride is, the Z20's exacting union of comfort and ventilation will deliver.