The new Fi'zi-k Arione titanium rail saddle features Foam-Wing Flex technology. This new technology allows the saddle shell to flex in key areas yielding a virtual custom fit without sacrificing critical shell rigidity and support necessary for optimal power transfer and comfort.Wing flex for free thigh movement and increasedpedaling power (more clearance for leg stretching).Increased contact surface area: 12% more than standardsaddles for better pressure distribution.Wider nose for increased comfort toward the front of thesaddle.Extended saddle length (30 cm) provides more ridingpositions.Over 85 mm rail adjustability: longest in its category.Carbon reinforced shell: stiff yet flexible, no saddlesag.Saddle is covered with Microtex a waterproof, syntheticnylon microfiber material that is 20% lighter and moredurable than leather.Padding material is foam.