Is there any rule of thumb on fitting a frame to a height or instep measure? I'm not bike savvy anymore, as we can tell from my posts. In the old days it was so basic - stand over the crossbar (ie, horizontal tube) and see if you had a tiny bit of wiggle room between "your delicate self" and the bike with your feet on the ground. Without the crossbar there, how do you measure? I'm 5'3" or 4" and one salesperson said I needed a small frame, the other said a medium frame. Does it all boil down to comfort of the ride and safety getting on and off? My problem is what seems ok in their parking lot may not be ok for the long haul. So wondering if I should be making any particular observations.