How To Measure Sit Bones For Bike Seat. You want just enough support for your “sit bones” and no more. Stand and measure between the center points of the indentations made by your ischial tuberosity, or sit bones.
This is your recommended saddle size. While it is possible to measure the width of your sit bones and use that number to roughly find what width saddle will work, nothing beats sitting on a saddle and seeing how it feels. Spray water on the paper towel.
Put white letterhead (a4) format page on the paper towel.
Find a flat surface, where you can sit. Spray water on the paper towel. Born female measure at the widest point, where wrist bones are most prominent. They put a lot of time and money into making saddles for people that are perfect sized and comfortable.