Fi'zi:k Volta R3 K:ium Saddle. The Fi'zi:k Volta R3 K:ium saddle represents Italian craftsmanship and technological know how at its best. The Volta R3 utilizes Fi'zi:k's Spine Concept system that keys off of a rider's flexibility to determine optimal saddle shape from one of three options Snake, Chameleon, and Bull. This particular saddle is the Snake edition for riders who are more flexible and shift around the saddle more. In fact, the Volta R3 is Fi'zi:k's first U shaped saddle and with its curved transversal section and flat profile it's perfect for those who prefer to move and slide along in the act of pedaling. Comfort is further assured thanks to the Twin Flex shell that creates a flexing hammock to relieve pressure and ensure hour after hour of sweet relief.