I'm 5'3, he said in between sizes. He had me try a 48 and a 51. I didn't even get half the block on the 51 before I knew it was to big. I didn't get long rides on the others, but 20 minutes or so on each. Only flat roads with some stop signs, but it gave me a change to try out all of the hand positions and I did quite a bit of sprinting up and down one of the streets and then slower riding back to get a feel for it. I really think the Amira in a 48 will be great, I just tend to doubt things when overloaded with information.