The Fi'zi:k Antares R3 is one of the most favoured saddles in the world by both professional road riders & enthusiasts alike. The Antares offers a composite thermoplastic carbon shell with Wing Flex for freedom of movement of the thighs, combined with Fi'zi:k Kium rails, a specially designed still yet lightweight alloy rail. The saddle shape by Fi'zi:k is wide & slightly curved in profile, which provides support to riders with an intermediate degree of lower spinal flexibility, allowing the pelvis to be rotated forward to more easily achieve a more aggressive, performance orientated riding position.