went to a Mike's Bikes in san rafael, CA
i told them i wanted to buy a specialized seat and wanted to get my sit bones measured (because they come in diff sizes). i was told to sit down on the "ass pad" the guy measured my sit bones to be 120mm, he then went to the saddles and got me the model i wanted in a 140mm size. when i got home and went to their website i saw the smallest size they sold was a 130mm . . . .