Fizik aliante versus kium team edition saddlethe aliante versus kium saddle incorporates fiziks spine concept it is made for bull which is the cyclist who has a low level of flexibility in their lower back and hamstrings for added comfort it also features a central relief channel it features a carbon reinforced nylon shell for support with optimised stiffness to weight construction with twin flex technology which combined a strong stiff carbon layer with a flexible comfortable carbon laye