When you ride everyday and race on the weekends, all the miles need to be comfortable. Selle SMP's Evolution sports their dropped nose design with a large open center channel that eliminates pressure on sensitive areas while still allowing full control in all conditions. The nylon shell is reinforced with carbon for added life and the stainless steel rails provide lightweight vibration damping. Light padding keeps you comfortable while the long rails provide ample fore/aft adjustment for the perfect fit.