You can buy longer seatpost toppers for quite a few brands that use them, don't know if Flandria is one of them though. It does look like a fairly unique seat post shape.
I think he's spoken to them already and they didn't offer any solutions!
@ltc started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
You can buy longer seatpost toppers for quite a few brands that use them, don't know if Flandria is one of them though. It does look like a fairly unique seat post shape.