The aliante shape is the widest and most longitudinally waved of firsquozkrsquos trio of pro cyclist developed spine concept models the aliante versus kium adds the comfort channel along the length of the saddle it features a carbon reinforced nylon shell for support with optimized stiffness to weight construction ndash with wing flex technology which enables flexibility where your thighs meet the saddle ndash and an alloy kium rail for light weight and strength made for bull