A helmet is a helmet, right? What most consumers probably aren't paying attention to is the foam used underneath the plastic shell, which is the part of the helmet that'll save your head should you crash. Kali uses a technology called Bumper Fit, a low density, soft foam that absorbs more of the impact in the parts of the helmet closest to the skull. The fit and styling of the Kali are on par with other top helmet manufacturers too, making this a good buy for cyclists wanting to err on the side of safety.