Kathi, it is not called a Size Cycle. I am not sure what the actual name of the machine is, but it's definitely a Guru invention. It might be the same type of thing as the Serotta system, but it has not been around very long. You have to have a specific relationship with Guru to have one and of course, have their training. The woman who did my fit is an aerospace engineer (!) who is working part time at the LBS. Of course, the LBS owner was there, too and did part of it. Here is a link: http://www.gurubikes.com/enCA/dfu/

My younger son had a Serotta when he was racing. It's not custom, but it's very pretty. It hung in the shed for a few years and we cleaned it up and gave it to our other son, who thankfully, is strong enough to ride a bike with racer's gearing. It's a classic bike now, and he always gets comments on it.