Pearl Izumi improves on wind jacket design in their P.R.O. Aero Jacket. They made it out of stretchy P.R.O. Softshell Lite fabric that doesn't flap in the wind, but still protects you from wind and water. Other features that will make the Aero the first jacket you reach for include Direct-Vent ventilation panels, contoured sleeves and collar, and reflective accents for safety. And, it's still very packable!