All fi'zi:K saddles are designed with and for the world's very best Pro racers, ensuring enhanced comfort and ultimate performance. Our extensive three-year research project shows that there is demand for a collection of wider-fitment saddles to complete the selection for optimum fit for every rider. The Antares R3 K:ium benefits from improved weight Distribution and a host of fi'zi:K technologies including a strong, supportive carbon Kevlar thermoplastic composite shell and alloy K:ium rail, and wing flex which enables flexibility where your thighs meet the saddle. Made for chameleon.