I always thought I had wide sit bones because of needing the Terry Falcon Y (men's) saddle with 140 mm width. Never measured the sit bones. I am surprised to hear from so many men (yes?) riding even wider saddles as I always felt they were rather hard to find. In my experience most saddles offered for racing are about 127 mm wide. Am I missing something? Having said all that, the Terry is the best, most comfortable saddle I have ever ridden. The narrower saddles were extremely painful "between the sit bones".