Our saddles are the result of many years of research, testing and feedback from a number of cyclists who have simply never been able to fit into any type of “normal” saddle, and along with the valuable indications of our orthopedic doctor, we have come to the conclusion of which the great reason for the discomfort in these saddles lies in the fact that the top is flexible between the front and rear supports of the rails. Visit the Gelu Website!