Aerodynamic Posture 1 is the most forward pelvic rotation, common in triathlons;The split support zone eliminates soft-tissue pressure for a more powerful rotated position;The saddle nose structure is designed for stable and symmetric pedalling;A strategic dual layer foam provides a soft top layer for comfort and a firm base for support;Channel Flex on the bottom of the shell for added compliance;inForm BioDynamic products optimise your natural movement for sustained, higher performance;The available Speed Storage system securely holds water bottles, tube and inflater;