Hi All,

Happily after years of riding a stock LBS bike, I've decided to build my own with everything I want. I have made most all other decisions, but saddle fit is something I could use some guidance on.

I do know my sit bones width...basically what I did is get a large block of "Floral Foam" and sit on it...then measured the imprints. 70mm inner to inner and 190mm outer to outer...Impressions are 57.5mm ovals that are angled in a little, approximate center to center is 129mm.

What I don't understand is why saddles don't have a fit range...ie the below linked saddle says its width is 146 mm...which really does me no good, because I don't know what sort of sit bone width the saddle was designed for.
http://www.performancebike.com/bikes...6_20000_400033

I know I could always "test out" a few saddles at the LBS that has been helping me with some things on this project, but unless they let me take a saddle for a 50 mile ride, I really don't think I will have a full view of what is going on.

Question:
How do I go about choosing a saddle that is good for 129mm center to center of sit bones?

Thanks!