@ Jon Pope
Hi Jon
Great question and typically, the seatpost is a great place for a bike to “lose” some weight! ;-)
However, with folding bikes, there is a little more strength built into the seatpost because of how long it has to extend.
Unfortunately, we do not have a recommendation for third party seatposts.
If you do find a seatpost that is lighter, do make sure it is designed for and works with folding bikes.
Tony

Looking for an upgrade “lighter” seat post for the Liberte’.
Would you happen to know of any?
Thanks,
Love this bike!!!!