These are the so called "Recaro Sportster CS Edition 2011" optional aviable with sideairbags and heating.
But be careful! It's very difficult to make the airbagsystem keeps working. There are lots of sensors which needs to be integrated in the Recaros. There is a sensor mat in the right seat and seat position sensors on both. Without these, airbag-errors are always on.
With this mods, I save around 25 kilos. The seats are very light, around 11 kilos each.