I think you need to go for a long walk..


To the OP: Different saddle different height. A sprung Brooks is sitting much higher than the sewn Brompton saddle.

If you worry about weight you could get a extended Ti post.

The advange of the telescopic over the extended seatpost is that it is easy to pull the top part plus saddle out, both if you need a really small fold plus to avoid theft. It all depends.

I started with a standard seatpost and just about made it with a sprung Brooks on it. Went to a telescopic for the reasons I mentioned plus that I wanted riders taller than me to be able to ride my bike without any problems.