> I would recommend 'Springbok' for the young athletes
and 'Reedid' for the mature set.

Not bad:-), though the company's full name is already Adidas-Salomon Corp., so you might use some of that in the name - especially considering Salomon was/is probably worth close to or more than Reebok. It is, btw, a little known fact that the name Adidas is an eponym of the founder, Adolf Dassler. His brother Rudolf founded the much smaller company Puma.

http://en.wikipedia.org/wiki/Adidas