The Aliante is 1 of fi\'zi:k\'s 3 Spine Concept™ Mens Road Saddle shapes. Of these 3, the Aliante shape is the widest and most longitudinally waved.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.You will benefit from the increased curvature (support) of the Aliante shape.Shell: Nylon Carbon Reinforced with Twin Flex™ \'sweet spot\' at the centre,Rail: K:ium,Scuff guards on either side towards rear of saddle,Integrated Clip System: Yes,Length: 265mm,Width: 140mm,Weight: 259g.