Standard: Suitable for those with an inside leg measurement of 33 inches / 84 cm maximum.
Extended: 2.5 inches / 60mm longer than the standard. This seatpost option does leave the saddle higher when the bike is folded and therefore the below option may suit you if you wish to keep the bike as small as possible when folded.
Telescopic: Designed for those with an inside leg greater from 35 inches / 89cm to 39 inches / 99cm approx. or for taller riders wishing to minimise how far the seat pillar protrudes from the folded package. It also allows you to remove the saddle more easily, which is perfect for particularly small spaces like the boot of your car.
Brompton bikes come with three Handlebar types:
M-type - Classic handlebar shape, a good all-round position.
H-type - For riders who prefer a more upright ride.