The bontrager inform nebula plus saddle is a posture 4 saddle designed for fitness upright pelvic rotation for athletic riders looking to go further faster if it is a smoother ride your looking for this could be the saddle for you flexform allows the saddle to pivot with the riders natural pedal stroke making a noticeable difference this saddle also has a contour relief zone which is a recessed saddle cavity to ease pressure on soft tissue as well as size specific curvature which means the