While we are always doing our best to provide objective, unbiased reviews of the best bike kit on the planet, it is often hard with things like aero helmets to add objectivity. You’ll often see things like “this helmet feels fast”, which is hard to prove, and easy to dismiss.
To avoid that we spent a lot of money on some commercial wind tunnel time and took all the best aero helmets on the market to determine the very best aerodynamic helmet. Cyclingnews’ Associate Editor, Josh, spent hours deep in aero calculations to work out which was the fastest, not only in a straight line but also in a full sweep of yaw angles (the angle at which the wind is hitting you).