An aero helmet is a bicycle helmet designed to reduce aerodynamic drag and improve the rider’s speed and efficiency.
Aero helmets typically have a smooth and elongated shape, with few or no vents and a tail that extends behind the head. Aero helmets are mainly used by time trialists and triathletes, who prioritize aerodynamics over ventilation and comfort.
The term aero helmet comes from the word aerodynamic, which means relating to the motion of air and the forces that affect objects moving through it. The first aero helmets were introduced in the 1980s, inspired by the helmets worn by motorcyclists and skiers. Since then, aero helmets have evolved with advances in technology and materials, becoming lighter, more comfortable, and more aerodynamic.
Aero helmet are also often referred to as TT helmet (time trial helmet), tri helmet (triathlon helmet), or aero lid.
An example of an aero helmet is the Giro Aerohead MIPS, which claims to be the fastest and coolest aero helmet on the market.
Alex Lee is the founder and editor-at-large of Mr. Mamil. Coming from a professional engineering background, he breaks down technical cycling nuances into an easy-to-understand and digestible format here.
He has been riding road bikes actively for the past 12 years and started racing competitively in the senior category during the summer recently.