Fly Racing Formula CP Helmet - Slice. ECE / DOT approved. Polycarbonate alloy shell construction produces an extremely lightweight shell with excellent penetration resistance. Impact Energy Cells made of RHEON, the Impact Energy Cells maximize absorption of low-speed linear and rotational impacts, reducing forces transmitted to the brain. Multi-density Expanded Polystyrene (EPS) Technology provides a softer EPS; critical zones have been fine tuned for a progressive response to low-speed and high-speed impacts. Expanded volume EPS means strategic areas of the helmet have more impact-absorbing EPS, more suspension between your head and the ground. Expanded Polystyrene (EPS) chin bar creates an additional element of impact mitigation. Clavicle shell relief zone creates a soft zone filled with EPS to aid in reducing clavicle injuries. Custom molded rubber trim with integrated nose guard.