The Columbus chart info (provided in the link) states that Aelle tubing is for an "amateur cyclist". Funny; I've always assumed that if you ride a bicycle, you're a bicyclist (no amateur label). Or, if you like labels, perhaps a novice or beginner bicyclist was what was meant. I'm going to make another assumption... that Columbus forgot the word "racing" in their description. In other (or more) words, the "amateur racing bicyclist". When I purchased my Oschner (built with Aelle tubing) that's how is was pitched to me, or, as tubing for a training (for racing) bicycle.