With the brompton standard length seat pillar a pu saddle can be up to 965mm from the ground and a rail saddle such as vitesse or brooks up to 995mm high if your inside leg is more than 32 inch or 33 inch with a rail saddle you almost certainly need a longer seat pillar the telescopic pillar is best for an inside leg more than 35 inch or for a taller rider wishing to minimise the height of the folded bike