You must wear a helmet when cycling. When people say ‘aero helmet’ they will mean either (i) a helmet with a profile similar to a classic road lid, which has been stream-lined and aero-optimised, or (ii) a ‘time-trial’ specific helmet which has a longer shape, akin to a teardrop, which is designed to fill the gap between your head, neck, and upper back when cycling in an aggressive position.
Take on one of the toughest cycling challenges in the world! Can you get to Vegas in 24 hours?