The Fizik Aliante Gamma Saddle with K:IUM Rails is the widest and most waved of Fizik's saddles. It has a nylon carbon-reinforced shell with Twin Flex™. The increased curvature of the Aliante shape is ideal for those with low flexibility.
Aliante Gamma is for The Bull: Rigid Spine If you have a relatively low degree of spinal flexibility (more than 90 degrees between your straight legs and back when bending over as far as you can, keeping your legs straight a shoulders’ width apart), you are a Bull. Your degree of Spinal flexibility will top out quite quickly when attempting to adopt the performance position. For this reason you will rotate you pelvis fully and will benefit from the increased curvature (support) of the Aliante shape.