Subrosa Lay Back Pivotal Seat Post. Got a 10 degrees offset which gives you a much better seat position than normal. It´s made of 6061 forged alloy and weights 10.4 grams.
Diameter: 25.4 mm Length: 115 mm Weight: 106.4 grams Material: 6061 alloy
http://www.subrosabrand.com
