Fizik Arione K:ium Saddle. Every cycling saddle should have wings, and the Fizik Arione K:ium is one that does. With a lightweight composite shell featuring gills cut into the wings, you retain all the rigidity you need to stay powerful, and gain comfort and flexibility in the most aggressive riding positions. A microtex cover with a suede center line is supportive and supple for comfort even on long distances. K:ium rails keep weight down and efficiency up while the perfect dimensions to accommodate the rider who locks in or likes to reposition a lot while riding.