Ben G.wrote a review of Crank Brothers Cobalt 3 Seatpost - Zero Offset on January 22, 2013
Familiarity: I've used it several times
Absolutely terrible seatpost. It doesnt fit most saddles and is tremendously difficult to adjust. Why you would go for this when you can get a regular carbon seatpost for the same price is beyond me. Returning mine ASAP.