The Campagnolo Record Carbon Seatpost is made out of an alloy/carbon head with a carbon fiber tube.  It also is lighter than ever and now allows for twice the number of position possibilities as the first-generation. version.  Yes, it is cool seat post but it was also designed to distribute the clamping forces more equally over the entire circumference of the post, ensuring long-lasting durability.

Record Carbon

Carbon posts include seatpost clamp

27.2 posts include 31.6-31.9 seatpost clamp

31.6 posts include 34.9-35.2 seatpost clamp