The Formula helmet uses Conehead technology, which is designed to absorb and dissipate impact forces more effectively than traditional EPS helmet liners. Created by physicist Don Morgan, Conehead technology uses cone shapes to pair a firm-density EPS with a much lower-density EPS. According to Fly, the result is more progressive energy absorption through a broader range of impact scenarios. The Formula has six critical zones of Conehead EPS. Each zone has a uniquely fine-tuned combination of EPS densities to manage impacts specific to that region of the helmet. These specific multi-density EPS zones are intended to produce a much more progressive response to low-speed and high-speed impacts. According to Fly, studies have shown that the majority of impacts occur on the forehead or side of the head. To help combat these impacts, the Formula development team incorporated lower-density expanded-volume EPS (thicker EPS) in these critical zones. This expanded-volume EPS is intended to provide improved suspension for impacts.