The giro synthe mips road bike helmet is the pinnacle of road helmet design combining the performance gains of aero efficiency with great cooling power to enhance rider comfort and efficiency the compact form slips through the air with ease across multiple yaw and head angles and offers greater cooling power than the aeon key features include the roc loc air fit system with 2 way fit tuning and aero mesh panels with a dedicated port for securely docking sunglasses as you ride this