Classic curvature upgraded with the science-backed technology of inForm BioDynamics, Serano RL is the optimal combination of fit and efficiency for those who ride aggressively or have a high degree of flexibility. A power pocket is included for max wattage while Hollow Ti rails and a carbon-composite shell keep Serano light and supportive.Key featuresAggressive Posture two optimizes a forward pelvic rotation for highly flexible athletesSize Specific Curvature ensures each saddle is designed specific to its widthMulti-zone density padding is strategically placed for optimal comfort and performanceHollow titanium rails deliver strength without added weightCarbon fiber-reinforced shell strikes a balance between strength and light weightinForm BioDynamic products optimize your natural movement for sustained, higher performance