It appears that sit bone distance is measured from the center of the impressions. It would be nice if saddle widths were to match directly to sit bones but I am guessing that saddle width is just the width from edge to edge of the saddle at its widest point.

I was looking at a web site about saddles and the bone which holds the sit bones appears to narrow as it goes forward. I think that this comes into play when a rider gets into a more aero position.

It sure would be nice if there was a perfect way to determine which saddle would work for me but I know that is not how it works.

The specialized saddle return policy sounds good. Are there any other manufacturers that will allow a person to return saddles?