Performance Posture 3 for pelvic rotation with a balance of comfort and efficiency.Suspended carbon fibre rails increase compliance for ultimate comfort.The recessed saddle cavity provides a contour relief zone and eases pressure on soft tissue.Size-Specific Curvature ensures that each saddle is designed specific to its width.The carbon fibre-reinforced shell strikes a balance between strength and a light weight.Strategically placed, multi-density padding for optimal comfort and performance.inForm BioDynamic products optimise your natural movement for sustained, higher performance.Requires an oversize rail-compatible seatpost and seatpost ears.