What is the aero seastpost from?

I have this carbon fiber aero seatpost. I don't know what bike it fits. Does anyone recognize it?

Image: https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/818x308/dscn4656_551d7129dab1cc86f9328cdf869a80de0435efc5.jpg Image:...