oy. the saddle marketing people have succeeded in confusing everyone.
The saddle measurements (130mm, for instance), are not a "size", like S,M, or L, they are just a measurement of the width of the saddle. A "men's" 130mm saddle is the same width as a "women's" 130mm saddle (there aren't too many women's saddles this narrow, but there are a few, such as the Terry Damselfly). 130mm saddles from different manufacturers **should** all meaasure 130mm.
The Specialized device measures your sitbones and then attempts to put you on a saddle that is a bit wider (I think usually 5-10mm) than your sit bone width. I am guessing you probably measured less than 130mm, and according to Specialized that means you will be most comfortable on a saddle that is around 130mm. This is a good place to start, but I don't think it should be viewed as "your size" -- depending on both saddle shape and various quirks of individual anatomy, people who measure similarly on the Specialized device may be comfortable on very different saddles -- I have read here of people for whom the Specialized "formula" puts them on a saddle that is too wide, and also of people for whom the Specialized formula steers them toward a saddle that is too narrow...
So, it's a good measurement to know, but it may still take a fair amount of trial and error to find out what actually works for you in the real world.





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