should have written a long time ago. I purchased your Prologue saddle back in May to replace the factory saddle that came on my P3 (prior to Cervelo making the switch to ISM). I had been bothered with hip and low back issues for almost three years prior to the change in saddles and have spent many hours and dollars trying to find a remedy. Ortho, Chiro, PT, massage… you name it and I have tried it. An Orthopedic suggested that I try an ISM saddle. I made the switch to the Prologue, and even though I basically ignored your suggested “break in” ride period the results have been PHENOMINAL! Almost immediately there was no more hip/back/piriformis pain to deal with and almost as important no more pain in the tender region either. I completed my first Ironman on September 20 in Maryland and can say that without my ISM saddle I know my training and race would not have been as comfortable and maybe not possible at all. Thanks for an awesome product and for allowing me to train and race PAIN FREE!