The Fizik Arione R3 features Fiberglass Thermoplastic Composite WingFlex, which provides the best support with optimized stiffness to-weight contruction. The Spine Concept is the fi’zi:k guideline to the right saddle choice. It realizes that cyclists have varying degrees of flexibility and human flexibility affects riding behavior when cycling in a high performance position. Features a microtex cover, microtex thigh glides and a K:ium alloy rail. Weighs 185 grams. Black / White has black center, white sides. White / Black has white center, black sides.