|Image from RoadBike Review|
The biggest change is a much smaller shape than aero helmets in the past. The smaller shape helps keep air disruption lower when you turn your head for any reason. It's difficult to maintain a completely straight head position over the course of any time trial or triathlon. Any time you turn your head sideways at all while wearing a traditional tear-drop aero helmet, the helmet disrupts more air and slows you down.
The helmet has two adjustable straps inside to create a perfect fit.
The people at the Global Cycling Network previewed the helmet in this video while the members of the Omega Pharma Quick Step team used it for a recent team time trial.