Only three stages into the race, we've spotted new helmets, unmarked helmets, and a prototype 13-speed Campagnolo groupset ... and Giro’s Aerohead II, Scott has now introduced its own ...

Scott includes some aero bungs if you want to make the helmet more streamlined or offer ... is especially prominent when turning over a good speed, providing noticeable cooling that helps ...

The popularity of aero road helmets has exploded in triathlon, sending the long-tailed TT helmet towards the margins as savvy triathletes have realised that aerodynamics, comfort and ventilation ...